Research And Analysis Of Power Grid Spatio-temporal GIS System Based On Ground State Correction Model

The grid GIS system is the core system of grid operation management.The current grid GIS system pays attention to the current situation management of space.It can only record the state of the grid space map for a recent period of time.For the historical state to be replaced and covered,there is a problem that cannot be traced back,and it is difficult to meet the needs of grid application development.How to accurately and intuitively record the development of grid space,compare the differences between different time and space of power grid,predict the development law of power grid in the future,and study the space-time GIS system of power grid has become a new direction of application development.Firstly,the paper summarizes the project background and research significance of the space-time GIS system.Then,the business comparison analysis of space GIS and space-time GIS system,combined with the research on the development status of space-time GIS technology,proposes a ground-time GIS system based on ground state correction model.In the research topic,this paper takes the time dimension of the existing grid space GIS as the research entry point,and studies the data fusion storage technology of time and space,the space-time version mapping technology and the space-time display technology.Combined with the grid business application,the overall function of the space-time GIS system of the power grid is determined through the analysis and description of the user role and system use cases.The entity classes that each control class depends on are analyzed,and the entity class relationship diagram is summarized and corrected according to the ground state.The principle of the model establishes the structure of the database logical table.The"four-dimensional" space-time GIS system was designed and implemented on the cloud platform.The system efficiently manages the drawing tasks,quickly maps,realizes the historical playback of the grid,and compares the curtains.Finally,the paper reviews and summarizes the design and implementation process of the space-time GIS system,and plans and forecasts the future work.