A low-cost high performance MV RMU with circuit breakers for use in remote controlled MV-LV substations: First results of ENEL distribuzione experimentation

The high quality standards, set by the Italian Energy Market Regulatory Authority, have encouraged the adoption by Enel Distribuzione of innovative apparatus installed on its network since the beginning of 2008: high performance air insulated MV switchgear [1] [2], which has undergone constant improvements and upgrades in all its components throughout the years. To achieve even higher quality of service results, Enel has specified, tested and adopted a new high performance gas insulated MV switchgear [3]. This new component has been designed to be installed in MV networks with high pollution, and is fully compatible with remote control smart units, therefore dramatically reducing installation costs, especially in the case of retrofitting. All the feedback data coming from the field are encouraging and completely in line with Enel first expectations.