Investigation of High Voltage Circuit Breakers for Breaking Capacity Based on Simulation Models

Petrov, V. L.; Morozov, I N; Кузнецов, Н. М.; Soloviev, E. L.

doi:10.1007/978-981-16-7393-1_15

Cited by 1 publication

(1 citation statement)

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“…Electrical contacts, being the pivotal component of high-voltage circuit breakers, directly influence their breaking capacity [1][2][3]. Copper-tungsten (CuW) composites, as a prototypical two-phase pseudo-alloy, integrate the high conductivity and thermal conductivity of copper with the exceptional strength and arc ablation resistance of tungsten.…”

Section: Introductionmentioning

confidence: 99%

Graphene-Enhanced CuW Composites for High-Voltage Circuit Breaker Electrical Contacts

Liu,

Han,

Jia

et al. 2024

Applied Sciences

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To address the issue of over-standard short-circuit currents in a power system, it is imperative to enhance the comprehensive performance of the electrical contacts, which serve as the lynchpin of circuit breakers, so as to improve the breaking capacity of high-voltage circuit breakers. Graphene, as the most prominent two-dimensional carbon material in recent years, has garnered widespread applications across various fields. In this study, graphene-enhanced CuW composites for high-voltage circuit breaker electrical contacts were prepared innovatively using integrated vacuum infiltration technology. The innovative graphene-enhanced CuW composites significantly improved the mechanical, electrical, and ablation resistance properties, and have been successfully applied in the 252 kV/63 kA high-voltage SF6 circuit breakers, achieving 20 times effective consecutive full-capacity short-circuit current breaking. It provides a new route for the development and application of high-performance CuW electrical contacts. Looking ahead, it is planned to extend their application to higher voltage grade high-voltage circuit breakers.

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Section: Introductionmentioning

confidence: 99%