Abstract
As one of the fastest-evolving cities in the world, Shanghai has been dedicated to improving the system reliability of its power grid. In the past decade, a 4-layered distribution system has been established in the city. By dividing the system into layers and deploying different strategies on each layer, this design has been performing well in practice. Power service availability has risen to 99.996% in the central area of the city. In pursuit for even higher reliability, an upgrade to this layered system is proposed. This proposal is targeted to solve problems encountered by the original 4-layered design and achieve higher reliability by introducing more redundancies into the first and second layers. Through the comparisons among the old and new layered network models and other urban classic high-reliability models, the analysis results prove that the design proposed in this paper is effective on reliability improvement with better adaptability at higher load density levels.
Published Version
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