Oil Immersed Transformer Arc Extinguishing Function
Oil immersed transformer oil is a special oil, which is extracted from a variety of organic substances, and it can further improve the service life of oil-immersed transformers when used in oil-immersed transformers. help. So what is the arc extinguishing effect of oil-immersed transformer oil?
In addition to the above two functions, the oil immersed transformer oil can also accelerate the arc-extinguishing effect in the casing of the oil-immersed transformer in a special operating state. Since the oil of the oil-immersed transformer moves frequently, when there is some kind of fault in the oil-immersed transformer that causes an arc, it can accelerate the extinguishing of the arc. For example, the tap changer of the oil-immersed transformer is in poor contact or the interlayer and inter-turn short circuits of the windings cause arcs. At this time, the oil-immersed transformer oil impacts the arc through movement, which elongates the arc, reduces the arc temperature, and strengthens the oil. The deionization in the immersed transformer oil can quickly extinguish the arc.
The capacity of the oil immersed transformer must be selected according to the calculated load. To determine the capacity of the oil-immersed transformer, the load rate of the oil-immersed transformer must first be determined. The efficiency of oil-immersed transformers is higher when the air-vibration loss is equal to the square of the load factor and the load loss. The load rate at the high-efficiency point of the oil-immersed transformer is between 63% and 67%. The load factor of oil-immersed transformers supplied to fixed loads is usually around 85%. However, this is not comprehensive from a power saving point of view. At the same time, the various economic costs of oil-immersed transformers are also worth considering. Including fixed asset investment, annual operating costs, depreciation costs, taxes, insurance premiums, etc. When choosing the capacity of oil-immersed transformers, it is the best choice to appropriately increase the load rate of oil-immersed transformers and reduce the number or capacity of oil-immersed transformers, that is, sacrificing operating efficiency and reducing one-time investment.
Therefore, everyone usually cleans the oil of the oil immersed transformer to a certain extent, which can help the oil-immersed transformer to adapt to any good environment, and it will not cause the oil-immersed transformer to dry without the oil in it.
