| Popis: |
The problem of power transformers diagnostics with damage is an research important topic, because it contributes to the rational capitalization in power systems and power plants equipment. The known studies little attention is paid to the energy processes that occur in the transformer under active parts damage conditions. On the basis of electric and magnetic balances equations, the equation of active and reactive powers an elements is obtained, taking into account the presence of short-circuited parts. The active and reactive power components balance is formulated. By modeling, experiments on damage effect on these powers distribution were performed. Reactive power dominance of due to the magnetic system and uneven change of power consumption under damage different types conditions are noted. Discovered uneven growth signs in active and reactive powers. These signs can be used as damage identifiers, which requires further investigation. The proposed approach has a close relationship with energy processes, therefore, it allows to determine the transformer real energy efficiency. |
