Automatic drawing method and system for power distribution feeder single-line diagram of radiation connection mode

Abstract

The present invention discloses an automatic drawing method and system for a power distribution feeder single-line diagram of a radiation connection mode. According to the automatic drawing method and system, a complete scheme for automatically drawing a radial single-phase diagram is given out, a data basis that uses a CIM_SVG based power grid data model as a graphic layout is researched, and a scheduling automated construction standard and an integrated system requirement of an open graphic model library are met; a hierarchical branched trunk-branch model and an object-oriented branch area model are established, so that maintenance and acquisition of network branch area data are better facilitated; and a preliminary layout of a power distribution line is completed according to a conventional power distribution single-line diagram arrangement principle, and in order to implement symmetrical graphic arrangement, a symmetry optimization method is provided for extremely asymmetrical branch lines in a feeder line, so that the readability and aesthetics of a graph are further improved.

Description

technical field [0001] The invention relates to a method and system for automatically drawing a single-line diagram of a distribution feeder in a radial wiring mode. Background technique [0002] The single-line diagram of distribution feeder is a commonly used graphic data of power network. Because it focuses on the logical connection of the network, it is more suitable for dispatching analysis and decision-making of operation and dispatching personnel. With the continuous expansion of the grid scale and the increase of line complexity, in order to reduce the workload of graphic maintenance, the automatic drawing technology of single-line diagram has been proposed and studied. In recent years, there have been many literatures on this research, mainly in Two aspects of data model and primitive layout and routing. [0003] The data model is based on CIM_SVG technology, which can fundamentally realize the integration of graph and model databases. This is also one of the key t...

AI Technical Summary

Problems solved by technology

As for the layout algorithm, although some existing literatures have basically solved the problem of automatic layout of the one-line diagram, there are still some problems that have not been solved.

First of all, there is little discussion on how to improve the coordination and aesthetics of graphics. If only the branch lines in the feeder line are arranged vertically and horizontally, the length and width of the graphics on the canvas may not be coordinated with the size of the canvas itself. In the case that the redundant space is not fully utilized, sometimes it is necessary to scale down the graphic elements to display the entire feeder line, which affects the legibility and aesthetics of the graphics; in addition, when eliminating the overlapping areas of graphics, the Which more convenient method to use to record the layout area, how to identify and eliminate the cross-overlapping area of ​​the graphics are the key parts of the graphics post-processing

Images