Abstract

Modern methods for analyzing and assessing the reliability of complex technical systems consider only its individual elements. The specifics of structural-functional interactions and integration into subsystems of different hierarchical levels are not taken into account. Studies show that analyzing the reliability of urban electric transport, also focus on individual components: the reliability of electric traction rolling stock, the reliability of the power supply system, the reliability of the track infrastructure, etc. The authors propose an approach that allows to consider urban electric transport as a complex technical system consisting of several levels that are hierarchically subordinate. Each level combines the components directly involved in the transmission and transformation of electric power into mechanical operation of the rolling stock under the influence of the external environment by means of traction electrical equipment. This approach will allow to develop the theoretical foundations of methods for analyzing the impact of the reliability of individual components of a complex technical system of urban electric transport on the effectiveness of the electric traction implementation.

Highlights

  • In the system of urban passenger traffic, such types of electric transport as the trolleybus, tram and metro are mainly used due to their high productivity and environmental friendliness

  • The main feature of such transport is the use of electric traction, which provides transmission and conversion of electric power by traction electrical equipment (TEE) into mechanical work of rolling stock through the provision of technological and production tasks of the transport process [1, 2]

  • The objects of the external environment are connected with the elements of the system; this connection is significantly weaker than the internal connections in the system

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Summary

Introduction

In the system of urban passenger traffic, such types of electric transport as the trolleybus, tram and metro are mainly used due to their high productivity and environmental friendliness. The objects of the external environment are connected with the elements of the system; this connection is significantly weaker than the internal connections in the system. The division of the system into elements is relative and depends on the task and objectives of the study; otherwise, in other aspects, the element can be considered as a CTS. For CTS is peculiar the possibility of dividing it into subsystems - a set of system elements that function independently [5]. In this case, the goals and objectives of the functioning of the subsystem itself, possessing some separateness, are subordinated to the general goals of the system

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