POWER TRANSFORMER MONITORING DEVICE Russian patent published in 2004 - IPC

FIELD: electrical engineering; in-service monitoring of power transformer operating characteristics and controlling its systems.

SUBSTANCE: device has units performing following functions: calculation of transformer integral characteristics, recording of emergency processes and on-load voltage regulator position, calculation models using real-time measurement data, cooling system control, remote-control of on-load voltage regulator, keeping of transformer service log, visualization of parameters under measurement, data transfer and monitoring system integration into computer-aided supervisory control and electricity metering systems. Device provides for monitoring instant, medium, and RMS values of currents and voltages, as well as temperatures of high, medium-, and low-voltage windings, ambient temperature, transformer oil temperature at inlet and outlet of coolers, oil temperature, level, and pressure, its humidity, and concentration of dissolved gases in oil filling transformer and on-load voltage regulator tanks, oil pressure in high-voltage bushings, insulation leakage currents.

EFFECT: enlarged functional capabilities.

1 cl, 1 dwg