| High speed, heavy load and electrified railway is the contemporary trend, the development of high-speed railway is the social development of China economy, policy. electrical system of high speed railway, both the precision and complexity, compared with the traditional railway are greatly improved, and therefore more susceptible to interference from the external electromagnetic environment. Storm as a natural environment electromagnetic interference of large-scale, sudden, has been reported to the safe operation of the railway system harm. But at present the research on geomagnetic storm effects of railway system is still in the initial stage, for the analysis of storm disaster and railway system fault concentrated in the track circuit and signal system, has not been reported by the storm against traction and research and for substation. This study fills the blank, explains the physical process of magnetic storm against the high speed electric primary system, and presents the calculation method to quantify the degree of harm of geomagnetic storms, forward-looking and innovative, and follow-up monitoring and prevention of storm disaster work laid the foundation.This paper firstly studies the mechanism and process of storm against high-speed rail primary electrical system, and analyzes our country high-speed rail characteristics, establishing electromagnetic model storm against the equipment system. Then the research method of power grid problems, are established under different power supply modes, equivalent circuit network infringement by traction magnetie storms, and considering the effect of different types of wire erection manner and location, and organic vehicle and non-vehicle through state of the circuit model of the similarities and differences. Then the Gansu area based on the data of magnetic storm data and railway, a magnetic storm TRNF traction calculation under the level of. At the same time, combining with the Guangxi railway data, using the mesh current method and the node admittance matrix, storm level traction calculation AT power supply mode. High iron electrical system finally comparison of two kinds of power supply modes by storm damage when the similarities and differences between the physical process and response mechanism, and summarizes the different geographical environment and different electrical structure calculation results of iron, the main parameters are analyzed. |
