The Temperature Precise Control Of Air-cooled Transformer Based On Transformer Solid Insulation Aging Mechanism

At present, the power company air-cooled transformer voltage level of 110kV or more under the jurisdiction of Tangshan has a substantial presence, and its temperature control strategy still be in the very simple stage. Therefore, this issue will be to determine the principles of the transformer on the basis of calculation of the temperature control, thus achieving precise temperature control of air-cooled transformer.The main factors of Transformer insulation aging is the oxygen, water and temperature. Given the current transformer operation, most of the insulation system and the air is isolated, there is no problem of external air into it. The amount of oxygen produced under the operation is small and can not be controlled. Therefore, this issue will focus on that the transformer insulati is impacted by water and temperature, and the relation between water and temperature the two. Under this basis, the need of precise temperature control and the implementation of programs of air-cooled transformer is discussed.The decomposition of insulating paper only at high temperatures to meet the Arrhenius equation. The precise mathematical model did not exist in actual operating temperatures. At the same time water is dynamic distribution between the insulation paper and transformer oil, the information available but also basically a curve fitting way to give with actual measurement data, again, no precise mathematical model. Therefore, the research process more can only rely on data and the curve analysis, scientific computing can not be exact.This topic starts through theoretical analysis, The actual production based on the analysis of data determines the production factors which can be controlled. Proposed the view that the impact of the aging of transformer insulation by controlling the temperature to integrated control temperature and water, by adjusting the temperature, adjust the water content and indirectly, so that the two factors of impacting transformer insulation aging are simultaneously controlled, which can achieve high efficiency transformer life management.