Modeling Method of AC electric railway system for fault analysis

摘要

The present invention relates to an accident analysis modeling method of an AC train power supply system, and in more detail, an AC train power supply system using an EMTDC (Electro Magnetic DC analysis program) to analyze an accident occurring in an AC train power supply system. Numerical analysis is modeled, and accident analysis simulation is performed according to a predetermined location and type of an accident on the AC train power supply system that is numerically modeled, and accidents can be analyzed using accident data such as accident current values output through accident simulation. It relates to an accident analysis modeling method of an AC train power supply system that enables The accident analysis modeling method of an AC train power supply system according to the present invention is an accident analysis modeling of an AC train power supply system that numerically analyzes and modeles using an Electro Magnetic DC analysis program (EMTDC) to analyze an accident occurring in an AC train power supply system. In the method, numerical analysis and modeling of the transmission line system that connects the KEPCO substation and the subway substation, and converting the three-phase main power supplied from the KEPCO substation into two phases of the T and M phases, and outputting the Scott transformer are modeled numerically. A power stage modeling step; A winding transformer modeling step of numerically analyzing and modeling the winding transformer (AT) such that the number of turns is 1:1, the primary side is connected between the catenary line and the feed line, the secondary side is connected to the catenary line and the rail, and the neutral point is connected to the rail; And, a catenary line, a conductor group of an upstream catenary line including an upstream feeder line, a downstream feed line, an upstream catenary line and an uplink conch line, a descending catenary conductor group including a descending catenary line and a descending conch. Dividing into rail conductor groups including a catenary line modeling step of numerical analysis modeling; It characterized in that it is configured to include.