PROTECTION SYSTEM FOR LIMITING THE IMPACT OF THE DISRUPTIONS OF AN EXTERNAL ELECTRICAL NETWORK ON THE LOCAL NETWORK OF A SITE CONNECTED TO THE EXTERNAL NETWORK

摘要

The invention relates to a protection system for limiting the impact of the disruptions of an external urban or industrial electrical network (3) on a local electrical network (1) of a site that is connected to the external network (3) and which comprises at least one local electric power source, referred to as "local source (6)" connected to the local network (1) and capable of injecting the surplus electric power into the external network (3), the protection system comprising a synchronous machine (9) connected to the local network (1) which is in turn connected to the external network (3) via a choke (10), referred to as "line filter choke", characterised in that the protection system comprises at least one local choke (13) that is associated with the local source (6) and connected to the local network (1) between the aforementioned local source (6) and the synchronous machine (9).