Transformer oil; influence factor
The design of transformer, the quality of new oil and the operation condition of transformer may affect the performance of transformer oil in operation.
Design - transformer effect on the performance of transformer oil in operation: coil windings of the transformer, high voltage coil distance and the distance between the transformer power plant size in relation to the strength, and the strength of electric field affects the transformer oil oxidation stability; transformer body size affect the loading amount of transformer cooling design directly related; to the operating temperature and the circulation velocity of transformer oil, thus affecting the oxidation stability of transformer and electrical properties.
The quality of new oil: recommended transformer using high quality can ensure long service life, ask for advice to the oil supplier product certification, and the quality of the typical sampling data to verify the purchase of oil, while retaining these initial data during the sampling period in order to run the data, it is very important for judging the trend of oil. Beware of buying oil mixed with the original transformer oil need not use, should be strictly in accordance with the "GB/T14542" management guidelines for transformer oil maintenance requirements for oil blending test run, oil blending test before use through.
The influence of transformer operation condition on the performance of transformer oil in operation: the most important factor that affects the transformer oil capacity is the operation condition of transformer. Transformer operating temperature is too high, local high temperature overheating, partial discharge and leakage will accelerate the thermal oxidation of transformer, thereby further affecting the transformer oil electrical performance.
Effective management of transformer oil
Special transformer oil is one of the external impurities (such as moisture, dust, fiber, surfactant etc.) will significantly change the electrical insulating oil invasion ability (such as high voltage drop, dielectric loss factor, higher) which requires the production, transportation and storage should have special measures.
Special two is it was added to the transformer after the surface with a variety of solid insulation materials and other components of the contact, transformer oil components and a variety of solid insulating materials (such as varnish, cardboard, rubber, paint, adhesives, etc.) will also change the compatibility, oil and electrical insulation properties, it is for transformer manufacturers to use in all transformer materials and find out whether the transformer oil is mutual solubility (solubility, oil variation), solid insulating material is clean and dry (trace water in oil and solid insulation material between suction and discharge, dust will affect the voltage resistance and dielectric loss).
Therefore, the management of transformer oil is not only a matter of oil producers, it runs through the entire process of sales and use. Production, transportation, storage, loading and unloading process used containers, tanks, pipelines, pumps and even samplers, sample bottles, etc., must reach three words requirements - "special, dry, net."". For special purposes; dry is dry; clean is clean. According to the "Three Character Classic", huge business losses.