Method for improving fault range finding precision of CRH (China Railway High-speed) maintenance and management traction substation

Abstract

The invention relates to a method for improving the fault range finding precision of a CRH maintenance and management traction substation. On the basis of principles of an existing horizontal combination line current ratio range finding method, and a lightning-resistant ring is additionally arranged to correct a calculation formula and realization principles of the horizontal combination line current ratio range finding method. According to fault range-finding test data during short-circuit test of the overhead contact line equipment in the same section, the unit reactance of the line and theimpedance of the lightning-resistant ring are obtained in a reverse deduction manner according to practical fault points and the optimized principles and formula of the horizontal combination line current ratio range finding method, the accurate unit reactance of the line and the impedance of the lightning-resistant ring during practical trip-out are obtained, the relative distance of a fault point in the fault section is more accurate, a fault range finding device can indicate a kilometer post of the fault point more accurately, and high fault range finding precision of the overhead contact line equipment is obtained. Via technical schemes of the invention, the fault range finding precision is improved, the range finding error is lower than 400m, and safe operation of CRH power equipmentand high-speed trains are ensured.

Description

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AI Technical Summary

Benefits of technology

This technology described in this patents helps improve the efficiency at detecting fault locations accurately compared to previous methods such as measuring voltage levels or calculating resistive values from rails. By considering both the impact caused by an antirnitation ring and other factors like leaks between conductors, it can achieve better results than previously possible without relying solely upon specific conditions during installation. Overall, these techniques help ensure reliable performance over time under harsh environmental conditions while reducing costs associated therewith

Problems solved by technology

This patents describes different aspects related to the problem addressed during the development phase of the National Fast Track Interchange System (FIS). Specifically, the Fusion Ratio Index Imaging Protocol (FSPIMIP)-based fault locator described in the patented text includes three main components - A Transport Condition Terminal Measurement Station(TSGSE_LRGS)_ An Overhead Line Safety Act Compliance Test Guide Platform (FTSP)). These systems are designed specifically for fast response times over 5 seconds, making it challenging to locate any potential fault locations within 10 minutes before they occur again. Additionally, these conventional methods require significant human effort input and take longer periods of downtime compared to modern electronic devices like computers.

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