OPTICAL SYSTEM FOR DIAGNOSTIC OF MEDIUM VOLTAGE DISTRIBUTION NETWORK
This work has been financed by the Research Fund for the Italian Electrical System under the Contract Agreement between CESI RICERCA and the Ministry of Economic Development - General Directorate for Energy and Mining Resources stipulated on June 21, 2007 in compliance with the Decree n.73 of June 18, 2007.
This paper describes an innovative pre-discharges detection system, developed to improve distribution network reliability. The assembled system includes optical sensors, based on different detection principle able to measure with high sensitivity the induced effects of pre-discharge phenomena, such as ignition of light, production of acoustic noise. Preliminary tests performed in a laboratory mock-up simulating pre-discharge phenomena arising during real operating condition confirmed the feasibility of the proposed approach. The obtained results are discussed in comparison with data simultaneously acquired with the standard partial discharge method.
