Il messagio alla redazione del sito RSE è stato inviato
Il messaggio al referente RSE è stato inviato
i dati sono stati inseriti correttamente. Per attivare la registrazione, seleziona il link nel testo del messaggio appena inviato all’indirizzo email specificato.
In this work it was proposed and investigated the feasibility of a fibre optic “trigger” sensor to be integrated into the developed multisensor diagnostic prototype
RSE has recently developed a fiber optic multi-sensors prototype for an early detection of pre-discharges in, since the appearance of these phenomena, on long term, can give rise to breakdown and consequently can lead to out-of-service. A relevant aspect that would improve the functionality of this prototype in practical applications is its automated temporization. Until now, this temporization was performed by mean of a trigger board externally connected to a measure transformer (TV) in order to synchronize signals acquisitions with the phase of the voltage applied to the MV switchboards. This connection could limit the application of this system in a real MV substation; actually this connection could not be always available. In order to overcome this limitation, in this work it was proposed and investigated the feasibility of a fibre optic “trigger” sensor to be integrated into the developed prototype. The proposed solution is based on the use of a transparent low-cost electro-optic ceramics, which behaves as an optical attenuator on a crossing light beam, when an external voltage is applied to its lateral sides. Further components used for the sensor layout are: a 1550nm laser source and an IR photodiode; all these elements are standard fibre pigtailed telecom components to guarantee a low cost assembling. The good performances of the sensor under AC and DC voltage, applied by means of a Voltage Calibrator, were successfully confirmed in laboratory.
31 Dicembre 2012
Trasmissione e distribuzione dell’energia elettrica (T&D 2012)