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In this paper, a novel liquid metal current limiter (LMCL) is proposed allowing for the large rated current and considerable fault current energy dissipation in DC power system. According to this topology, the LMCL consists of a fast switch and several liquid metal current limiting units in parallel. Firstly, a simulation model of this LMCL is built to calculate the fault current commutation process...
Fault current limitation is a promising solution to protect power transmission lines and electrical apparatuses. A specially designed setup is employed to observe the pinch process of liquid metal for application of current limitation, which can be classified into three stages. The liquid metal first separates from the nonsmooth spacer channel’s surface to form a uniform air gap between them. Then,...
This paper focuses on the experimental research of current limiting performance of a liquid metal current limiter based on pinch effects. A specially designed test setup is adopted to observe the dynamic process of the fluid pinch process. From the frames obtained by high-speed camera, its pinch mechanism is revealed. Furthermore, the arc behavior is studied, which can be classified into four stages:...
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