Пристрій для оцінювання залишкового робочого ресурсу силового масляного трансформатора

Abstract

A device for monitoring remaining life cycle of power oil transformer comprises three comparators, two temperature sensors, two converters of temperature to constant voltage, adder unit, two function generators, four pulse generators, two pulse counters, RS flip-flop, two indicators, current-sensing device, current- to- constant voltage converter, voltage sensing device, normalizing transducer, power valuator, AC/DC voltage converter, NOT gate, two analog-to-digital converters, controlled frequency divider, register, digital-to-analog converter, five AND gates, power setup unit, two OR gates, zero adjustment unit. The device comprises gas-analyzer, converter of gas concentration to constant voltage, unit for gas concentration reference value setup, wherein gas-analyzer output is connected to first input of third comparator through the converter of gas concentration to constant voltage, second input of third comparator is connected to output of unit for gas concentration reference value setup, and output is connected to input of first indicator.