Status acquisition device for monitoring state of equipment in protection and control system for energy generation, transmission and distribution, has comparison circuit comparing average value of modulated signal with reference value

摘要

The device (100) has a conversion circuit (101) for receiving an input signal representative of the state of equipment, and converting the input signal into a synchronous digital modulated signal whose average value over time is proportional to the amplitude of the input signal input. A comparison circuit (103) is intended to compare the average value of the modulated signal with a reference value, and to produce a status indicator signal if the comparison result matches a predetermined criterion. Independent claims are also included for the following: (1) a protection and control system for energy generation, transmission and distribution (2) a state acquisition method for monitoring the state of equipment in a protection and control system for energy generation, transmission and distribution.