Superiority analysis skills on oil-immersed transformers

Oil-immersed transformers mainly by multi-loop high pressure switch system, armored bus, 10kva step up transformer induction automation system, communication, remote metering, capacitance compensation and DC power supply and other electrical unit combination, means in a moisture-proof, rust-proof, dust-proof , rodents, fire, theft, insulation, totally enclosed, removable steel structure housing, electromechanical integration, fully enclosed run, mainly has the following characteristics:
(1) high degree of automation: the station of intelligent planning, maintenance system, the choice of substation automation equipment Microcomputer induction, lax device, to be completed "four remote", namely telemetry, remote, remote control, remote adjustment, each unit has a separate operation function, relay protection function fully, operating parameters can be set from afar, on the cabinets humidity, temperature control and remote smoke alarm, no duty demands satisfaction; according to the needs of remote monitoring can also complete the picture.
(2) Advanced Skills safe and reliable: the choice of the current domestic housing some preemptive skills and skills, housing usually use galvanized steel, construction materials and the choice of specification container production skills, have excellent corrosion resistance, to ensure that 20 years does not rust, regulator the transformer selection aluminum gusset closure plate, sandwich selection fireproof insulation materials, cabinets means air conditioning and dehumidification equipment, test prefabricated compact transformer equipment operating from outside the natural environment and the impact of climate pollution, ensuring at -40 ℃ ~ + 40 ℃ bad Under normal operation conditions. Equipment cabinets fully enclosed high voltage switchgear selection (eg: XGN type), dry-type transformers, dry-type transformers, vacuum circuit breakers, stretched spring operating organizations, rotary switches and other domestic skills preemptive blocking equipment, goods without exposure to live some, is fully enclosed, fully insulated structure fully capable of zero electric shock arrives, the station can be completed oil-free operation, high security, the second choice of computer automation systems induction can be completed unattended.
(3) factory prefabrication: The oil-immersed transformers planning, according to practice as long as the planner needs substation, to plan a main wiring diagrams and equipment outside the box, you can select the type of box becomes standard and supplied by the manufacturers, all equipment a device in the factory, debugging qualified, real complete substation construction factory, shorten production cycle planning; site means only cabinet position, contact between the cable box, cable outlet adapter, maintain calibration value, transmission experiments and other needs commissioning operations, all from the device to substation put into operation only about 5 to 8 days time, greatly reducing the construction period.
(4) a combination method is sensitive: oil-immersed transformers due to the relatively compact structure, each box constitutes an independent system, which makes changing the combination method is sensitive, on the one hand, we can all choose oil-immersed, that is to say, 35kV and 10kV equipment all inside the device, consisting of a full oil-immersed transformers; switch boxes can only 10kV, 35kV equipment outdoor equipment, 10kV equipment and control security system inside the device, on this combination approach is particularly suitable for rural power grids The transformation of the old station, which does not move original equipment 35kV, 10kV only means a switch box can be reached unattended needs. Always, oil-immersed transformer no fixed combinations,single pole transformer abb use units can be freely combined according to the actual situation of some form, to the satisfaction of the needs of safe operation.