Box-type substation has the characteristics of light weight, convenient installation and maintenance, beautiful appearance, especially suitable for photovoltaic power station transformation. Box-type substation is mainly composed of multiple high voltage switch system, armoured bus, substation integrated automation system, communication, remote, metering, capacitor compensation and dc power supply electrical unit combination, installed in a moistureproof, rust, dust, rat, fire prevention, security, heat insulation, fully enclosed, movable steel structure box, mintegration, closed operation, mainly has the following characteristics:
1.Advanced technology is safe and reliable.
Box part with the current domestic leading technology and process, shell generally use aluminum zinc steel plate, frame using standard container materials and production process, have good anti-corrosion performance, 20 years without corrosion, inner sealing plate with aluminum alloy buckle plate, sandwich with fire insulation material, air conditioning and dehumidification, box device equipment operation is not affected by the natural climate environment and external pollution, can ensure normal operation in-40℃ ~ + 40℃ harsh environment. Box inside a equipment with fully closed high voltage switchgear (such as XGN), dry transformer, dry transformer, vacuum switch, spring operating mechanism, rotating isolation switch equipment, products, for fully enclosed, full insulation structure, can achieve zero electric shock accident, high security, secondary computer integrated automation system, can realize unattended.
2.High degree of automation.
The station intelligent design, the protection system adopts substation microcomputer integrated automation device, scattered installation, can realize “four remote”, namely, remote measurement, remote communication, remote control, remote control, each unit has independent operation function, relay protection function is complete, can set the operation parameters, control the body humidity, temperature and distant smoke alarm, meet the requirements of unmanned duty; according to the need for image remote monitoring.
3.Factory prefabrication.
During the design, as long as the designers make the main wiring diagram and the design of the equipment outside of the box, they can choose the box specifications and model provided by the manufacturer, all the equipment in the factory at a time, debugging qualified, and truly realize the substation construction factory, shortenedDesign and manufacturing cycle; site installation only requires box positioning, cable connection between boxes, outlet cable connection, protection value verification, transmission test and other commissioning work. The whole substation only takes about 5~8 days from installation to operation, which greatly shortens the construction period.
4.Flexible combination mode.
The structure of the box-type substation is relatively compact, and each box constitutes an independent system, which makes the combination mode flexible and changeable. The user unit can freely combine some modes according to the actual situation to meet the needs of safe operation.
5.Investment saves quick results.
Box type substation with scale conventional substation reduce investment 40%~50%, due to the selection of advanced equipment, especially the oil-free equipment operation, fundamentally completely solve the equipment leakage problem in conventional substation, substation can implement state maintenance, reduce maintenance workload, can save operation maintenance costs, the overall economic benefit is very considerable.
6.Small footprint.
The box-type substation is selected, only 1 / 10 of the area of the same scale substation, can make full use of the street, square and factory corner can be installed and put into operation, in line with the national policy of saving land.
7.Beautiful appearance, easy to coordinate with the environment.
Box shell with aluminized zinc steel plate and container manufacturing technology, beautiful design, under the premise of guarantee power supply reliability, through the selection of box substation shell color, thus easily consistent with the surrounding environment, especially suitable for urban construction, such as urban residential area, station, port, airports, parks, green belts, and other densely populated areas, it can be used as a fixed substation, also can be used as a mobile substation
