Practical research on automatic graph and model exchange between GIS and DMS

Abstract

In modern power distribution utility, GIS and DMS address the same physical network and share a great amount of data. Nowadays, most of them still exist as separate systems and on different platforms. With the continuing growth of data and evolution of the systems, it requires to establish interfaces and workflows between GIS and DMS for exchanging necessary data with a lower maintenance cost and, in another hand, to ensure data consistency. This paper presents the problems when generating single-line diagram (orthogonal maps) from GIS to DMS and the model exchange between GIS and DMS. DMS utilizes GIS information to automatic on-line generation of graphical representations for 10kV feeders. For a new DMS installation, it generates the single-line diagram to facilitate the SCADA functions. Considering topology of distribution network is under significant change subjected to civil projects and the growth of power consumptions, geo-schematics drawings in the GIS should be converted into single-line diagram to adapt to the distribution network operators and update the DMS in a specified period of time without manual interference. Finally, the management expectations, benefits of the graph and model exchange technologies are also discussed. At present, Distribution Automation Systems (DAS) are under installation in most of the local power supply bureaus. GIS serves the newly deployed DAS by linking the geo-schematics maps and the concurrent model to DAS and then converted into single line diagram to facilitate the system operator. Those schematics have indeed to be deeply integrated in the SCADA system, including additional operational functions linked to DAS. Unfortunately, the graph and model exchange cannot be finished in an automatic manner due to the fact that, for example, common data quality when exporting the data from GIS. On the other hand, after importing SVG graphics from GIS, DAS does not have unified graphic primitives and the graphics appears to be misplaced, etc. Workflows for graph and model exchange between GIS and DAS have been discussed and established in many power supply bureaus. Provided that the correspondent department and personel have been assigned, the process still needs to be strengthened and so does the automation level. Problems of model and graphics after deriving from GIS and being introduced into the distribution automation system are also discussed. Suggestions and the corresponding countermeasures are provided in addition to the analysis. Considered the optimization of management process, the enterprise application integration will be further improved.