Overheat fault diagnosis and early warning system and method for electrical equipment of traction substation of electrified railway

Abstract

The invention discloses an overheat fault diagnosis and early warning system and an overheat fault diagnosis and early warning method for electrical equipment of a traction substation of an electrified railway. The fault diagnosis and early warning system comprises wireless sensors, concentrators, a computer and the like, wherein the wireless sensors comprise wireless temperature sensors, wireless temperature and humidity sensors and wireless current sensors, and measure the temperature of the electrical equipment, the temperature and humidity of an environment and the current of a transmission line respectively; the concentrators receive monitoring point data from each wireless sensor in the whole traction substation, and upload the received data to the computer; and the computer finishes the acquisition and storage of the monitoring data, and finishes intelligent diagnosis and early warning for an overheat fault of the electrical equipment according to the acquired data. By the system, a scientific basis can be provided for the running and overhauling of the traction substation of the electrified railway to ensure the power supply security of the railway.

Description

technical field [0001] The invention relates to a fault diagnosis and early warning system and method, in particular to an electrified railway traction substation electrical equipment overheat fault diagnosis and early warning system and method. Background technique [0002] There are a large number of electrical equipment such as high-voltage isolating switches, transformers, circuit breakers, transformers, and high-voltage switchgears in the traction substation. Under normal circumstances, the resistance of the contact point increases due to poor contact at the joint, aging or surface oxidation, etc., and then the temperature rise causes excessive heat and burns out. If the temperature of these heat-generating parts is not monitored in time and effectively , which may eventually lead to equipment damage, resulting in power outages or even fire accidents, which will bring great safety hazards to the operation of electrified railways. Therefore, necessary detection measures...

AI Technical Summary

Problems solved by technology

However, it has the following limitations in the monitoring of electrical equipment in substations: the detection object is only the temperature of the monitored point, and it is determined whether there is an electrical equipment overheating fault by simply setting a temperature threshold

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