BS EN 50641:2020 pdf free.Railway applications一Fixed installations一Requirements for the validation of simulation tools used for the design of electric traction power supply systems.
BS EN 50641 This document specifies requirements for the acceptance of simulation tools used for the asssment of design of electric traction power supply systems with respect to TSI Energy. This document is applicable to the simulation of AC and DC electric  raction power supply systems, in the frame of assessment required by Directve (EU) 2016/797. The methods and parameters defined in this document are only intended for use in the design of the electric traction power supply system, and hence this document solely considers validation of tools within the TSI energy subsystem for all envisaged railway networks. This document does not deal with validation of simulation tools by measurement. This document focuses on the core simulation functions comprising the equations and functions which calculate the mechanical movement of trains and also which calculate the load flow of the electrical traction power supply system. In doing so this document provides all requirements necessary to demonstrate that a simulation tool may be used for the purposes of TSI approval of electric traction power supply systems. Any simulation tool which meets the acceptance requirements of the test cases in this document can be used to determine TSI compatility for all systems of the same voltage and frequency without any requirement for further validation as part of the TSI assessment process. This document includes controls for the modification of simulation tools, in particular the limits of pplicability of certification when tools are modified. These controls focus on determining whether the core functions of the simulation model are modifed. This document provides only the requirements for demonstration of the algorithms and calculations of core functions. The use of a certifed simulation tool in accordance with this document does not, in itself, demonstrate good practice in electric traction power supply system design, neither does it guarantee that the simulation models and data for infrastructure or trains used in the tool are correct for a given application. The choice and application of any models and data, of individual system components, in a design is therefore subject to additional verification processes and not in the Scope of this document. Competent development of design models and full understanding of the limits of design tools remain requirements in
any system design. This document does not reduce any element of the need for competent designers to lead the design process.BS EN 50641 pdf download.