Method for fault identification in an electrical radial network, an application of the method and an arrangement for fault identification in an electrical radial network

摘要

For fault identification in an electrical radial network having a section cable (1) and having a number of outgoers (A1-A3) which can be connected to it, the invention provides that a central control device (40) uses fault direction signals and/or fault signals which are formed by outgoer protective devices (AG1-AG6) which each monitor one of the outgoers (A1-A3) to determine the position of the fault in the radial network and, if there is a fault on the section cable (1), for the central control device (40) to initiate its disconnection. According to one aspect of the invention, the current in the radial network is regulated at zero before disconnection, in order to keep the wear on the switching devices as low as possible. The method is preferably used in a radial network in the form of a magnetic levitation transport system (17). The invention also relates to a corresponding apparatus.