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Research on at Traction Suck Current Rate to Improve the Accuracy of the Fault Location

Author: YangZuoChun
Tutor: ChenXiaoChuan
School: Southwest Jiaotong University
Course: Proceedings of the
Keywords: High-speed rail All Parallel AT Power Supply Fault Location Suction on the current ratio
CLC: TM922
Type: Master's thesis
Year: 2009
Downloads: 179
Quote: 2
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Abstract


In today's highly developed economy , the railway is moving forward in the direction of high - speed , heavy-duty construction of high-speed rail ( passenger rail line) in line with the needs of China's economic development and national conditions . High-speed railway is bound to the use of electric traction power supply system as an important part of the electrified railway , power supply options has become one of the key factors for the development of high-speed railway . AT power supply with its own advantages , in France, Japan and other countries has been widely used, more and more the concern of China 's railway sector . PDL, using AT power supply is fully parallel traction power supply system more reasonable protection configuration and more accurate fault location put forward higher requirements . Traction Network for All Parallel AT power supply short-circuit fault , the theoretical analysis and research , to make more accurate fault location method , the traction power supply system is in good operating condition and safety of railway systems , reliable, efficient transport have significance. In this paper, the work of the various modules of the whole parallel AT power supply system modeling, and then combined into a complete model of the power supply system , and this model simulation under a variety of short-circuit fault conditions , and then make a short circuit distance with the suction on the curve of the current ratio . Then the use of the method of theoretical calculations , based on the current distribution in the AT power supply system , again calculated on the current ratio of the absorption in the short circuit case , carries it with the simulation data , we calculate the simulation fault location fault location with the traditional theory compared to the error range . Based on theoretical analysis and simulation analysis , the establishment of suction on the current required for fault ranging than the table , the fault is corrected ranging table methods to improve the accuracy of fault location .

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CLC: > Industrial Technology > Electrotechnical > Electrification,electrical energy application > Electric traction
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