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The state of industrial injuries during operation and repair technology of power supply devices in the power complex of Russian Railways, which confirms the relevance of the development and implementation of methods and technical means of protecting electrical personnel of the power complex of Russian Railways from electrical injury. The analysis of existing methods of maintenance, operation and repair technology of the contact network is carried out. An innovative solution is proposed in the field of electrical safety of personnel of the energy complex of JSC "Russian Railways" through the creation of a single high-precision coordinate space of power supply devices, implemented on the basis of mechanisms for using the global navigation satellite systems GLONASS / GPS.Considered the implementation of power supply and sectioning circuits and main electrical connections in the form of a digital model, which has a mathematical description of the geometric characteristics and spatial position of the contact network; feeding feeders; overhead lines: longitudinal power supply, automatic blocking, centralization and blocking, lines «two wires - rail», lighting; waveguide and other objects of power supply and electrification of railways. On the basis of modeling dangerous situations of electric shock, the electrical personnel of the power complex of JSC «Russian Railways» during the maintenance and repair of overhead contact network devices in all categories of work substantiated the effectiveness of the implementation of a spatial database in the form of a digital model of contact network devices. The use of a digital model of the overhead contact network will increase the level of electrical safety during maintenance and repair of overhead contact network devices and reduce the level of electrical injury to employees of the power complex of Russian Railways.