Cable-type distribution network single line diagram aided drawing method

Abstract

The invention relates to a cable-type distribution network single line diagram aided drawing method. The method comprises the steps that a cable-type distribution network single line diagram aided model is established, drawing of all electrical devices in lines on a length and width fixed screen canvas is achieved, and a maximum switching interval within constraint is obtained; a thought solving model of a branch defining method is applied to obtain the size of a turning-on and turning-off station and an initial solution of the interval, a drawing is generated, then model parameter is adjusted according to a drawing display result, and the model is solved again till a satisfied drawing result is obtained. Therefore, a drawer can draw a cable-type distribution network single line diagram in an automatic distribution network system according to the coordinate and size of the final turning-on and turning-off station. By adopting the method, the drawer can determine the size and intervals of the turning-on and turning-off stations and other pixels according to the visual display diagram, the drawing time of the cable-type distribution network single line diagram is shortened, and the drawing quality is improved.

Description

technical field [0001] The invention belongs to the technical field of power distribution automation operation and maintenance, in particular to an auxiliary drawing method for a single-line diagram of a cable-type distribution network. Background technique [0002] Distribution automation is the future development trend of the distribution network. It refers to the collection of equipment status information and protection information in the distribution network to the distribution automation master station of the control center through communication technology, computer technology and automatic control technology. The information is processed and when necessary, the automatic or human-computer interaction mode is used to perform remote control operations on the line switch. In the distribution automation system, the single-line diagram of the distribution network is the basis of all analysis and operation. It is the most intuitive tool for dispatchers to carry out distribut...

AI Technical Summary

Problems solved by technology

When the number of opening and closing stations is large, it is often difficult to quickly determine the optimal spacing and size, which requires repeated attempts and adjustments by the drawing personnel

[0004] At present, the research on the automatic drawing of cable-type one-line diagrams includes the automatic layout method based on the attraction-repulsion algorithm and the layout method based on topology layering. Maximize the use of the canvas space equivalent to the computer screen. When the structure of the entire line is displayed, the switch graphics are small, which is not conducive to the monitoring and remote operation of dispatchers.

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