METHOD FOR DIAGNOSING POWER TRANSFORMERS Russian patent published in 2017 - IPC G01R31/00 

FIELD: electricity.

SUBSTANCE: method for diagnosing power transformers comprises an oil sample preparation unit, a chromatographic analysis module, a chromatograph, a chromatography data transmission unit, a digital data processing unit, a common bus, a data entry unit, a memory unit, a diagnostic results unit. It additionally comprises a transformer, a partial discharge module, a data acquisition unit, a partial discharge calibration unit, a partial discharge filtration unit, a unit of data transmission by partial discharge method, a chemical-physical analysis module, an oil sample preparation unit, an oil dielectric strength determination unit, an oil purity determination unit, an oil flash temperature measurement unit, an analytical unit, a database of reference data. The oil sample preparation unit, the chromatograph and the chromatography data transmission unit are combined into the chromatographic analysis module, and the module of diagnostics by partial discharge method consists of a data collection unit, a partial discharge calibration unit, a partial discharge filtration unit, a unit of data transmission by partial discharge method. The chemical-physical analysis module consists of an oil sample preparation unit, an oil dielectric strength determination unit, an oil purity determination unit, an oil flash temperature measurement unit.

EFFECT: increased accuracy of determining the power transformer state.

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