Train-network model construction method for joint type electric segmental arcing of anchoring section of train

Abstract

The invention discloses a train-network model construction method for joint type electric segment arcing of an anchoring section of a train, and the method specifically comprises the steps: 1, carrying out the circuit modeling of a traction network system comprising the joint type electric segment of the anchor segment based on the actual mechanical structure of the joint type electric segment ofthe anchor segment and the position of the train during the train passing through segment period; 2, in consideration of the influence of the arc length on the arc dissipation power and the limitationof a specific mechanical structure of a contact wire at an electric segment on the arc length, expanding a Habedank black box arc model into a model suitable for electric segment arcing; and 3, establishing an integrated model of a traction network, an electric arc and a train in two transient processes of train power in and out segmentation; the invention provides a fine design for a traction power supply system of a train, provides a related model basis for solving the problem of burning of a contact wire at an electric segment caused by the generation of an electric arc, and creates conditions for overcoming and solving the prominent or hidden technical problems in the current high-speed railway electrification engineering.

Description

technical field [0001] The invention belongs to the field of modeling of electrified railways, and in particular relates to a vehicle-network model building method of articulated electric segmental arc burning for a train passing an anchor section. Background technique [0002] In the electrified railway, since the catenary is the only current-taking device of the pantograph of the train and there is no backup equipment, the contact wire is divided into many independent power supply units by adding a catenary electrical segmentation device, in case of equipment maintenance or line failure In the event of a power outage, reduce the scope of the power outage or provide cross-regional power supply to ensure the normal power supply of the catenary to the train. However, due to the position of the electric section, there is a difference in the length of the power supply arm of the feeder at both ends of the electric section fracture, and the feeder at both ends of the insulating ...

AI Technical Summary

Problems solved by technology

However, since arcs are more likely to occur at the electrical segment and the location of the arc is relatively fixed, frequent arcing at the same position of the contact wire may burn the contact wire

Once the contact wire is blown, it is very likely to cause accidents such as pantograph bowing

Images