Automatic layout method of power dispatching large-screen power transmission grid single line diagram

Abstract

The invention relates to an automatic method of a power dispatching large-screen power transmission grid single line diagram. The current layout method is difficult to distinguish. The method comprises the two steps outlay of a supply region and a district and outlay of converting stations in the supply region and the district, wherein the outlay method of the supply region and the district comprises the following steps: firstly, establishing a mathematical model of a converting station and a line in a power transmission grid; then conducting optimal outlay and solution on the supply; and conducting optimal outlay and solution on the district; the outlay method of the converting station in the supply region and the district comprises the following steps: firstly, obtaining the initial outlay of the converting stations; then selecting two converting stations in a chunk at random and carrying out coordinate exchange mutually; and calculating a composite function of the crossing quantity among lines and a line Manhattan distance. During design the layout of the converting station in the supply region, the invention not only considers that the line crossing is as less as possible and the distance between the connected converting stations is as short as possible, but also considers the effect of following wiring, can prevent the layout-wiring multi-circulation and obtain an overall optimized solution and realizes the effect which can not be achieved by a plurality of local optimizing methods.

Description

technical field [0001] The invention belongs to the field of electric power dispatching automation, and in particular relates to an automatic layout method for a large-screen transmission network single-line diagram of electric power dispatching. Background technique [0002] The power dispatching large screen is generally in the shape of a long strip. The single-line diagram of the transmission network on it or the power flow diagram of the state of the circuit breaker, the flow and the direction of the flow are added to the single-line diagram. The layout and routing are required to be clear, so that the dispatcher can see at a glance Scheduling decisions. At present, the single-line diagram or power flow diagram is still mostly drawn manually, but with the continuous increase of substations and lines, the task of drawing the wiring diagram of the transmission network with the help of manpower is becoming more and more difficult, and the generated large-screen wiring diagr...

AI Technical Summary

Problems solved by technology

Some domestic scholars (see "Automation of Power Systems" 2007, 31(24): 12-15 and "Power Grid Technology" 2008, 32(21): 9-12) proposed to use the optimization method to conduct transmission single-line diagrams, but Its automatic layout method only considers the total length of the connection as the objective function, and the optimization method uses an algorithm similar to local search optimization, which easily makes the objective function fall into a local extreme point and cannot jump out, which brings difficulties to automatic layout and routing. deal with the situation

Images