Telecommunication independent “self-healing” M.T. cable distribution network

The “Self-healing” protection feature of a medium voltage cable distribution grid is an integral part of a well-functioning DMS/SCADA system applied in the grid. Reliable telecommunications are indispensable for the operation of the DMS/SCADA system. Through the application in the grid of the “Smarter RMU´s instead of conventional RMU´s, a “Self-healing” protection concept will be provided which can be used as a backup in the case of a telecommunication breakdown or a DMS/SCADA malfunction. The same “Self-healing” protection concept can be provided as well in any grid in the absence of a SCADA system, provided a number of “Smarter RMU”s is installed in the Grid. The “Smarter RMU”, is a Single Breaker, Auto-Loop-Sectionalizing, Fuse-less Smart RMU. Using its local intelligence (microprocessor), the following can be achieved: (1) Automatic fault location and fault isolation. (2) Automatic network reconfiguration to minimise the number of electricity consumers affected.