DIN CLC/TS 50641-2:2024-11

This document specifies requirements for the test and acceptance of simulation tools used for the design of DC electric traction power supply systems for urban rail guided mass transport systems, such as tramways, elevated and underground railways, mountain railways, trolleybus systems, and magnetically levitated systems which use a contact line system. The validation process will be carried out for the 750 V DC voltage, and other voltages can be validated with the cross-acceptance. This document focuses on the validation of the core simulation functions comprising the equations and functions which calculate: - the mechanical movement of trains and - the load flow of the electrical traction power supply system. This document also specifies procedures for the modification of simulation tools, in particular the limits of applicability of acceptance when tools are modified. These procedures focus on determining whether the core functions of the simulation model are modified. This document excludes complex models with active components such as controlled rectifiers and inverters. This document does not mandate the use of a particular simulation tool in order to validate the design of an electric traction power supply system. This document does not deal with validation of simulation tools by measurement. The document is not applicable to the validation of simulation tools with respect to: - short circuit studies; - electrical safety studies (for example, rail potential); - harmonic studies; - studies of transient phenomena; and - electromagnetic compatibility studies over a wide frequency spectrum. Typical examples of application of this document: requirements for the test and acceptance of simulation tools used for the design of DC electric traction power supply systems for urban rail guided mass transport systems, such as tramways, elevated and underground railways, mountain railways, trolleybus systems, and magnetically levitated systems which use a contact line system.