Lightning safety evaluation method for railway traction substation with interconnected integrated grounding system

Abstract

Embodiments of the present invention provide a lightning strike safety evaluation method and system for railway traction substations with an interconnected integrated grounding system. The structural parameters of the grounding device of the railway traction substation and the structural parameters of the comprehensive grounding system are established, and the railway traction substation is interconnected with the comprehensive grounding system; the simulation value of the evaluation index obtained from the simulation numerical calculation results and the corresponding setting The values ​​are compared, and the safety evaluation results of the railway traction substation are obtained according to the comparison results. The safety evaluation results of the embodiment of the present invention can reflect the safety performance when the grounding device of the traction substation is interconnected with the integrated railway grounding system, and the safety of the traction substation after interconnection is evaluated.

Description

technical field [0001] Embodiments of the present invention relate to the field of high-speed railways, and more particularly, to a lightning strike safety evaluation method for railway traction substations with interconnected integrated grounding systems. Background technique [0002] The grounding scale of the grounding device of the traction substation along the high-speed railway is relatively small, and it is difficult to make the grounding impedance meet the standard when it exists alone. The ground impedance of the railway integrated grounding system is less than 1Ω, and its important role is to provide a common ground terminal for the railway facilities along the line, especially the traction substation. When the railway traction substation is interconnected with the integrated grounding system, the grounding impedance of the traction substation drops below 1Ω, and the ground network safety parameters such as touch voltage, step voltage and ground potential rise can ...

AI Technical Summary

Problems solved by technology

However, after the grounding device of the traction substation is interconnected with the integrated grounding system, how to evaluate the safety of the traction substation when the traction substation is struck by lightning has become an urgent problem to be solved

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