Moisture content control system for transformer oil using measured Q-factor

   This paper discusses the issues of determining the moisture content in transformer oil. A system for the rapid determination of the moisture content in transformer oil during its operation is proposed. Recurrent analytical relationships for the capacitance and active resistance of a measuring transducer with transformer oil as a function of the integral charge and discharge voltage have been derived. The task of calculating the capacitance and active resistance using these recurrent formulas is assigned to a microcontroller within the voltage recording device.

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