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Underground power supply system reliability and safety analysis method

Author: ZengDeRong
Tutor: HeZhengYou
School: Southwest Jiaotong University
Course: Proceedings of the
Keywords: Metro Power Systems Traction power supply system Reliability Security Fault Tree Analysis
CLC: TM732
Type: Master's thesis
Year: 2008
Downloads: 827
Quote: 16
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Abstract


As social and economic development and progress, urban rail transport in urban development and people's daily life plays an increasingly important role in urban rail transit system to provide them the necessary power supply, power supply once the interrupt will not only cause urban rail transport transportation paralysis, but also endanger the lives and safety of passengers and property damage. Therefore, analyze and improve the entire metro power supply system reliability and security become increasingly need to focus on the subject. First, the article focuses on the traction power supply system reliability problems. For traction power supply system of their own characteristics, combined with the definition of reliability, discusses the subway concept of traction power supply system reliability are given to evaluate the traction power supply system reliability index system of Guangzhou Metro Line 1 in 2003 and 2004 The power supply system failure raw data, for example, calculate the line traction power supply system reliability indices. This article from the perspective of structural reliability, the traction power supply system is divided into traction substations, catenary and power supply reliability analysis partitioned into three parts, namely, the consequences of failure mode analysis table created by the failure mode effects analysis table analysis to out a number of potential failure modes, test methods have been failures and remedies, then the fault tree analysis method using fault tree model for qualitative and quantitative analysis, qualitative analysis of fault tree minimal cut sets, structural importance, etc., Quantitative analysis of the top event of the failure probability. Secondly, a kind of power supply system on the subway for safety analysis and evaluation methods. Metro initially proposed the concept of power system security level, can be divided into five: Very safe, very safe, safe, basic security and insecurity, and then create safety assessment index system, according to experts, scoring four factors in the evaluation of the situation to get set scores by fuzzy comprehensive evaluation method on the subway power supply system for safety assessment and gives examples of analyzes are given to improve power supply system security methods and measures. Through the reliability and safety of the method is given for underground power supply system reliability and safety assessment methods, cite examples, demonstrates the FMEA method and reliability analysis of FTA Combination superiority and practicality , also shows that the fuzzy comprehensive evaluation method on the subway safety assessment is valid.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system scheduling, management, communication > The operation of the power system
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