Ronghua Qiu

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Existing quick or early detection and identification methods for short fault are based on the sharp increase of the short current to extract the fault features in low-voltage system. They all have a technical bottleneck problem of miscarriage of justice, which is affected by the noise of the distribution system and the non-fault running state interference(More)
Abstract—The dimension accuracy in scanning plane of high-resolution stereolithography (SL) system with building parameters (laser beam scanning speed (factor A), cured line width compensation (factor B), hatch spacing (factor C) and the coefficient of resin's shrinkage compensation (CRSC, factor D)) were investigated in this study. A L27orthogonal(More)
Because of the limited information interaction between protective electrical apparatuses in different distribution levels, rapidity and global selectivity are difficult to achieve concurrently in short-circuit fault protection. Based on short-circuit fault early detection, a fast and selective protection technology in low voltage distribution systems was(More)
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