Design of box-type substation

The box-type substation is mainly composed of multi-circuit high-voltage switch system, armored bus, integrated substation automation system, communication, remote control, metering, capacitance compensation and DC power supply and other electrical units. It is installed in a moisture-proof, rust-proof, dust-proof, Rat-proof, fire-proof, anti-theft, heat-insulation, fully enclosed, movable steel structure box body, mechanical and electrical integration, fully enclosed operation.

The technology of the box-type substation is safe and reliable

The box-type substation adopts the best domestic technology and technology. The outer shell is generally made of galvanized steel plate, and the frame is made of standard container materials and manufacturing techniques. It has good anti-corrosion performance and guarantees no corrosion for 20 years. The inner sealing plate is made of aluminum alloy buckle plate, sandwich Using fireproof and thermal insulation materials, air-conditioning and dehumidification devices are installed in the cabinet, the operation of the equipment is not affected by the natural climate environment and external pollution, and it can ensure normal operation in the harsh environment of -40℃～+40℃.

The primary equipment in the box adopts fully enclosed high-voltage switchgear, dry-type transformer, dry-type transformer, vacuum circuit breaker, spring operating mechanism, rotary isolating switch and other domestic technical equipment. The product has no exposed live parts and is a fully enclosed and fully insulated structure. It can completely achieve zero electric shock accidents, the whole station can realize oil-free operation, and the safety is high. The secondary computer integrated automation system can be used to realize unattended operation.

The intelligent design of the box-type substation, the protection system adopts the substation microcomputer integrated automation device, and is installed in a decentralized manner. The "four remotes" can be realized, namely remote measurement, remote signaling, remote control, and remote adjustment. Each unit has independent operation function and relay protection function. Complete, remote setting of operating parameters, control of humidity and temperature in the cabinet, and remote smoke alarm to meet the requirements of unattended duty, and remote monitoring of images can also be realized as required.

When designing a box-type substation, as long as the designer makes a design of the main wiring diagram and the equipment outside the box according to the actual requirements of the substation, he can choose the box-type transformer specifications and models provided by the manufacturer. All the equipment is installed and debugged in the factory. Realize the factoryization of substation construction, shorten the design and manufacturing cycle; site installation only needs cabinet positioning, cable connection between cabinets, outgoing cable connection, protection setting verification, transmission test and other work that needs to be debugged. The entire substation is from installation to It only takes about 5-8 days to put into operation, which greatly shortens the construction period.