PRESENTATION OF SPATIAL DATA OF ELECTRIC NETWORKS IN GEO-INFORMATION SYSTEMS

Effective management of electrical networks operation is impossible without the use of modern information technologies. Geo-informatics is a rapidly developing trend in information technologies that becomes widely used in the electric power industry. The electrical network in a geometric representation brings up associations with a linear oriented graph. And this is a determining fact for any systems designed to automate information about electrical networks. The primaries are data structures in computer memory, which may or may not be interconnected (contain or not contain topological links) Electrical network diagrams should present in geo-information systems as vector graphics. The vector representation of spatial data can be: non-topological or topological. Vector-non-topological data representation is a digital representation of a point, linear, and polygonal spatial objects as a set of coordinate pairs, with the description of objects geometry only. A vector-topological presentation is a kind of vector presentation of linear and polygonal spatial objects that describes not only their geometry but also the topological relations between polygons, arcs, and nodes. The article describes the advantages and disadvantages of the use of the vector-topological and vector-non-topological presentation of the data of electrical networks. Topological geo-information systems support poorly or do not support at all the object-oriented domain models, and in object geo-information systems the topological relations between objects can be presented in an insufficiently complete form. Development of a hybrid object-topological model of geo-information systems is a highly relevant task for the application of geo-information systems in the power industry.