High-speed rail train-network model construction method considering multi-train pantograph-catenary vibration off-line arcing

Abstract

The invention discloses a high-speed rail train-network model construction method considering multi-train pantograph-catenary vibration off-line arcing. The method comprises the following steps that 1, acquiring train-network coupling distribution of multiple motor train units when the multiple motor train units run on the same or adjacent power supply arms; 2, constructing a vehicle-network topology according to the vehicle-network coupling distribution; 3, introducing a combined model of the Habedank equivalent arc model and a switch into the arcing bow head position of the motor train unitin the train-network topology to obtain a train-network model considering the bow-network vibration offline arcing situation of overlapping of multiple train occurrence time periods; 4, calculating parameters of the vehicle-network model, and simulating the vehicle-network model to carry out electromagnetic transient analysis of simultaneous pantograph arcing of multiple vehicles. According to themodel constructed by the invention, the actual capacitive coupling between the contact network and the vehicle body and between the contact network and the vehicle roof high-voltage cable is increased, and the situation that multiple vehicles simultaneously generate bow net vibration off-line arcing is also considered; and an accurate data source and a theoretical research basis are provided forsolving the electromagnetic transient overvoltage problem of the high-speed rail at present.

Description

technical field [0001] The invention relates to the field of electromagnetic transient analysis when pantograph-catenary arcing occurs simultaneously on multiple vehicles, and in particular to a high-speed train vehicle-network model construction method that takes into account the pantograph-catenary vibration off-line arcing of multiple vehicles. Background technique [0002] Pantograph-catenary vibration off-line arcing caused by pantograph-catenary vibration caused by pantograph-catenary vibration, pantograph-catenary vibration, and high-speed airflow is a common phenomenon in electrified railway operations. The phenomenon. This phenomenon can cause electromagnetic transient overvoltage problems. At present, scholars at home and abroad mainly use modeling calculation or modeling simulation to study the electromagnetic transient overvoltage of pantograph off-line arcing. However, the existing research has the following problems: almost only for a single situation, that i...

AI Technical Summary

Problems solved by technology

However, the existing research has the following problems: almost only for a single situation, that is, most studies only consider the arcing condition of one car, and few studies consider the simultaneous occurrence of multiple trains running on the same or adjacent power supply arms arcing conditions

Compared with the offline arcing of a single train, the offline arcing of multiple trains at the same time is likely to cause more serious bow head and car body transient overvoltage

Images