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2 results about "Graph theory" patented technology

In mathematics, graph theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects. A graph in this context is made up of vertices (also called nodes or points) which are connected by edges (also called links or lines). A distinction is made between undirected graphs, where edges link two vertices symmetrically, and directed graphs, where edges link two vertices asymmetrically; see Graph (discrete mathematics) for more detailed definitions and for other variations in the types of graph that are commonly considered. Graphs are one of the prime objects of study in discrete mathematics.

Regional multi-microgrid dynamic networking method based on graph theory

InactiveCN107546773AImprove power supply reliabilityGood for the economySingle network parallel feeding arrangementsAlgorithmPower grid
The invention relates to a regional multi-microgrid dynamic networking method based on a graph theory. The regional multi-microgrid dynamic networking method is technically characterized by comprisingthe following steps that 1, according to a multi-objective function optimum in global economic operation and highest in system power supply reliability of an intra-regional multi-microgrid and presetconstraint conditions, an optimization model of a regional multi-microgrid is established; 2, a regional multi-microgrid dynamic networking model based on the graph theory is established by combiningwith network topology connection of a regional multi-microgrid system based on the regional multi-microgrid optimization model established in the step 1; 3, an improved particle swarm algorithm is adopted to solve the regional multi-microgrid dynamic networking model based on the graph theory, and dynamic networking of the regional multi-microgrid is achieved. By combining with interconnection and intercommunication characteristics of the regional multi-microgrid and power output constraint of the microgrid, the optimization model optimum in global economic operation and highest in system power supply reliability of the regional multi-microgrid is established, and a solution is provided for dynamic multi-microgrid networking in a regional range.
Owner:TIANJIN UNIV +1

GIS network topology structure based historic celebrity and event chronicling method

InactiveCN105740341AGeographical information databasesOther databases queryingNetwork connectionNetwork topology
The invention discloses a GIS network topology structure based historic celebrity and event chronicling method. The method comprises the following steps of determining to input names of various or interested historic celebrities and events; associating place information of the historic celebrities and events with a place name and address database; designing and organizing data structures of a historic celebrity element class, an important historic event element class, a small historic event element class, a small celebrity event association element class; constructing a network topology structure graph of historic celebrities and events; and through a graph theory and network connection analysis, obtaining GIS visualization based historic celebrity and event chronicles. According to the method, massive historic celebrity and event information can be integrated in a distributed network environment to realize intuitionistic, visual, convenient and quick historic celebrity and event GIS chronicles.
Owner:HUNAN UNIV OF SCI & TECH
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