Wuhan S16 oil immersed transformer oil immersed transformer has strong adaptability

Description :

　　The performance characteristics of oil immersed transformers are that the oil tank adopts corrugated sheets, which have a breathing function to compensate for the volume change of oil caused by temperature changes. Therefore, this product does not have an oil storage tank, which obviously reduces the height of the transformer.

　　Performance characteristics of oil immersed transformers:

　　1. The low-voltage winding of oil immersed transformers generally adopts a cylindrical structure with copper foil winding, except for small capacity copper wires; The high-voltage winding adopts a multi-layer cylindrical structure, which balances the distribution of turns, reduces magnetic leakage, has high mechanical strength, and has strong short-circuit resistance.

　　2. The iron core and winding are each fastened with measures, and the fastening parts such as the height and low-voltage leads of the device are equipped with self-locking anti loosening nuts. They adopt a non suspended structure, which can withstand the shaking during transportation.

　　3. The coil and iron core are vacuum dried, and the transformer oil is vacuum filtered and injected to reduce the moisture inside the transformer.

　　4. The oil tank adopts corrugated sheets, which have a breathing function to compensate for the volume change of oil caused by temperature changes. Therefore, this product does not have an oil storage tank, which obviously reduces the height of the transformer.

　　5. Due to the replacement of oil storage tanks with corrugated sheets, the transformer oil is isolated from the outside world, effectively preventing the entry of oxygen and moisture, which can lead to a decrease in insulation performance.

　　Based on the above five performance points, it ensures that oil immersed transformers do not require oil change during normal operation, reducing maintenance costs and extending the service life of transformers.

　　Cooling method for oil immersed transformers:

　　(1) Oil immersed transformers usually adopt three cooling methods: oil immersed self cooling, oil immersed air-cooled, and forced oil circulation.

　　(2) Oil immersed self cooling relies on natural convection of oil to remove heat. Oil immersed air-cooled type is based on oil immersed self cooling type, with the addition of a fan to blow air to the oil tank and oil pipe to enhance heat dissipation. Forced oil circulation is the process of using an oil pump to extract hot oil from a transformer and cool it outside before sending it into the transformer.

　　Insulation function of oil immersed transformer:

　　(1) Insulate the conductive material from other parts.

　　(2) Can separate different charged parts.

　　(3) Reasonable insulation arrangement can improve the uniformity of electric field distribution.

　　(4) Enable electrical components to acquire a certain capacitance.

　　(5) Plays a role in mechanical support, fixation, and oil circulation heat dissipation.

　　Reasons for the rapid aging of oil in oil immersed transformers:

　　1. Equipment conditions:

　　The design and manufacturing of oil immersed transformer equipment adopt small intervals, which are prone to hot spots during operation. This not only promotes the aging of solid insulation materials, but also accelerates the aging of oil immersed transformers. Generally speaking, the oil oxidation rate of oil immersed transformers increases by about twice for every 10 ℃ increase in temperature from 60-70 ℃. In addition, if the sealing of oil immersed transformer equipment is not sufficient and moisture enters, it will also accelerate the aging of oil in oil immersed transformers.

　　2. Pollution issue:

　　When injecting new oil immersed transformers into equipment, precise filtration, degassing, dehydration, and impurity removal must be carried out. If clean and dry oil immersed transformers are injected into the equipment, the medium loss factor of the oil may exceed the very low limit of 2% specified during operation.

　　3. Operating conditions:

　　It refers to the fact that under normal operating conditions, transformer oil has a certain degree of oxidation. If the equipment operates at overload or experiences local overheating, and the oil temperature increases, the aging rate of transformer oil will accelerate.

　　4. Maintenance during operation:

　　The maintenance of oil immersed transformer oil during operation is very important. Many oil immersed transformers are not fully sealed. If the desiccant in the respirator fails and cannot be replaced in time, moisture will be brought into the oil immersed transformer oil. If the anti adsorbent in the oil fails and is not replenished in time, it will promote the oxidation and deterioration of the oil immersed transformer oil.

　　Shandong Changneng Transformer Manufacturing Co., Ltd. adheres to the business philosophy of "honesty and trustworthiness, pioneering innovation, and excellence", and sincerely invites friends from all walks of life at home and abroad to work together and seek common development.

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