METHOD FOR FILTRATION OF MAGNETISATION CURRENT AND REPRODUCTION OF PRIMARY VOLTAGE OF MEASURING TWO-WINDING VOLTAGE TRANSFORMERS Russian patent published in 2020 - IPC H01F27/42 H01F38/24 H01F30/04 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and can be used in emergency control systems of power systems, relay protection, measurement and recording of emergency events. Method of filtration of magnetizing current and reproduction of primary voltages of measuring voltage transformers includes preparation of system of nonlinear equations reflecting real electromagnetic physical processes in transformer, selection of measuring transducers for connection to power system and for organization of closed computer system operating in real time, at the output of which voltages are generated, which are proportional to components of magnetization current and reproduced primary voltage, in analogue or digital form, the output information is visualized and the computing process is additionally controlled while controlling reproduction errors.

EFFECT: technical result consists in reduction of magnetization current filtration error with allowance for hysteresis, expansion of functional capabilities for practical use and research purposes in various applications.

1 cl, 7 dwg