(A power network topology algorithm based on geographic information system (GIS) is proposed. GIS is a new technology to realize the digitalization and informatization of power system, and its use is very extensive. Aiming at the limitation of the existing GIS in the network analysis program, the topological functions and characteristics of the GIS are analyzed, and how to construct the topological data that meets the needs of the power network analysis based on the topological data of the GIS is studied. The algorithm uses GIS connectivity features.)
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