Power-frequency online anti-icing de-icing method for electrified railway contact network

Abstract

The invention provides a power-frequency online anti-icing de-icing method for an electrified railway contact network. The method comprises the steps as follows: A, the head end and the tail end of any power-supply arm of an electrified railway traction substation are respectively connected with a head-end dynamic reactive compensation device and a tail-end dynamic reactive compensation device; and a temperature sensor is arranged on a contact network and connected with a controller of the head-end dynamic reactive compensation device and the tail-end dynamic reactive compensation device; and B, the temperature sensor monitors the temperature of the contact network, and when the detected temperature is lower than 0 DEG C, the controller controls the head-end and the tail-end dynamic reactive compensation devices to enter into an anti-icing de-icing working state and specific current is generated on a contact net for anti-icing and de-icing. The method is used to carry out automatic online anti-icing and de-icing under the condition that the railway is in a continuous running state and the power supply is not influenced, so that the contact network is not frozen in freezing rain, ice and snow and extreme weathers, thereby ensuring the safety of train operation.

Description

technical field [0001] The invention relates to a method for on-line anti-icing and thawing of an electrified railway catenary. Background technique [0002] Severe icing of electrified railway catenary will lead to a sharp decline in the mechanical and electrical properties of the catenary, which will lead to icing accidents. The catenary of electrified railways causes power interruption due to ice and snow hazards, and the accidents are usually very serious. After the catenary is covered with ice, on the one hand, it will seriously affect the flow of the locomotive. On the other hand, when the pantograph contacts the ice-coated wire, arcing will occur, which will increase the wear and tear of the wire and pantograph, and sometimes cause contact The severe damage to the net made the train lose its power to run. All these problems can cause train delays and even operational safety accidents. [0003] The deicing and anti-icing methods currently used in engineering practic...

AI Technical Summary

Problems solved by technology

At present, there is a practice of directly throwing deicing agent at airports and expressways in China, but there is no application case of applying deicing agent to contact wires.

In addition, the pollution of the soil and the environment caused by chemical agents is also a problem that needs to be considered.

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