METHOD FOR DIAGNOSTICS OF HIGH VOLTAGE PULSE CAPACITOR Russian patent published in 2023 - IPC G01R31/64 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the methods for diagnosing the technical condition of high-voltage capacitors under operating conditions. Essence: a controlled capacitor is pulsed with operating voltage, followed by taking a sample of the capacitor oil after each cycle of pulses and determining, through chromatographic analysis, the current values of the concentrations of gases dissolved in the oil sample. The residual life of the capacitor is judged by comparing the current values of the concentrations of gases dissolved in the oil sample with the previously obtained values of the concentrations of gases dissolved in the oil sample for control samples of capacitors exposed to pulsed operating voltage before a breakdown occurs. At current concentrations of gases dissolved in the oil sample that do not exceed the reference level for any of the gases, the calculated life of the controlled capacitor is confirmed. If there are values exceeding the reference level for at least one of the gases, they are rejected.

EFFECT: increasing the reliability of diagnostics of a high-voltage pulse capacitor.

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