The Common Information Model (CIM) is a standard based on UML that is used to precisely describe electric networks. It has been developed by the electric power industry to allow an easy exchange of information between different IT platforms and different companies. Practical implementation of the CIM model uses XML for data exchanging and thus benefits of the XML advantages (portability, extendibility, human readable...) as its syntax checking mechanisms (well formedness check and validation

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... inst schemas). This paper presents an adaptation of the CIM that has been developed to describe the railway systems facilities and components which are not included in the CIM model, such as: DC Traction Substation and Neutral Zone. This model is intended to be used as a standard exchange format between control centres (normally developed by different companies) of the Spanish railway infrastructure manager (ADIF). This development will significantly enhance the interoperability of different control centres and thus improve the robustness of the railway network.