Abstract
Subway traction power supply system is the energy source of subway operation. The normal operation of subway traction power supply system is directly related to the stable operation and safety of subway. If the subway traction power supply system breaks down, it not only will cause economic losses, but also may cause social disorder. Therefore, it is of great significance to study the traction power supply system of subway to ensure the safe operation of subway. The establishment of a reasonable monitoring and testing platform, the simulation analysis of the traction power supply system, and the regular health assessment can provide a strong guarantee for the safe operation of the subway. This paper aims to design a practical test platform through MATLAB modeling, so as to establish a simulation model of subway traction power supply system, and comprehensively monitor and grasp the health status of subway traction power supply system. This paper quantitatively evaluates the health status of subway traction power supply system, applies the principle of multilayer immunity, establishes the traction power supply system of analytic hierarchy process (AHP), and constructs the immune monitoring system of each layer. This method can provide the health status information of subway traction power supply system, subsystems, and components comprehensively, accurately, and intuitively and determine the subsystems and components that need to be maintained.
Highlights
Introduction to Metro Traction Power SupplySystem2.1. e Structure of the Subway Power Supply System. e entire subway is powered by the subway power supply system
From the perspective of different functions, the subway power supply system consists of six major systems: external power supply system, main substation, traction power supply system, stray current corrosion protection system, power monitoring system, and power lighting power supply system
Centralized power supply is a kind of external power supply which means that one main substation supplies centralized power to other subway substations. is is the most commonly used method of subway in every city in our country
Summary
E establishment of a reasonable monitoring and testing platform, the simulation analysis of the traction power supply system, and the regular health assessment can provide a strong guarantee for the safe operation of the subway. Erefore, this paper can see the importance of studying and analyzing the subway traction power supply system, which is of great significance for maintaining the order and normal operation of the city. E traction substation is the core part of the traction power supply system because; on the one hand, this part receives electrical energy from the external power source and a series of operations, such as step-down rectification, and it can convert the high-voltage AC power supply to the low-voltage DC power supply for output and
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