COMPENSATION OF SIMPLE FIBER OPTICAL FARADAY EFFECT SENSORS.

摘要

A monitoring system for detecting ground leads in an electrical power supply network comprising, a plurality of monitoring devices (100) mounted in various monitoring locations, each of said monitoring devices (100) including a detector ( 20) to detect the level of harmonics in said electrical energy, said level of harmonics detected in a specific frequency range, including said monitoring devices in addition a memory device for storing a harmonic reference value, further including said devices (100 ) for monitoring a processor (104) for comparing said harmonic level with said reference level, said monitoring device (100) including a communication device (106) for transmitting an alarm whenever said harmonic level is above said reference level for a specific period of time ico, characterized in that said monitoring device (100) also includes software for continuously or periodically adapting said reference value to harmonic variations caused by changing charging conditions of said electric power supply network.