Distributed suspension weight layout method for suppressing wire torsion and galloping

Abstract

The present invention provides a method for distributing the layout of the suspended weight to suppress the torsion and galloping of the conductor, comprising: S1. collecting the parameters of the transmission line; S2. constructing the mass equation of the suspended weight; S3. constructing the suspended weight through the mass equation of the suspended weight quality P and the handle length L of the pendant hammer P The curve, and the curve determines the best quality of the weight and the length of the handle of the hammer S4. Determine the layout coefficient of the weight, and determine the four kinds of arrangement distances S5. Build the evaluation model of the weight of the weight and determine the resonant frequency Margin increment, S6. Judging whether the arrangement of the suspension weight under the conditions of the four spans meets the safety constraint conditions of the suspension weight, if so, then screen out the span corresponding to the maximum value of the resonant frequency margin increment and determine in step S3 The optimal quality of the suspended weight and the optimal length of the hammer handle are taken as the final arrangement of the suspended weight. If not, return to step S3 until the final arrangement of the suspended weight can be reasonably adjusted layout.

Description

technical field [0001] The invention relates to a method, in particular to a distributed suspended weight arrangement method for suppressing twisting and galloping of wires. Background technique [0002] All over the world, large-area transmission line conductor ice coating disasters have never been cut off. On the one hand, the icing of the transmission wire will increase the static tension of the wire, cause the unbalanced tension of the adjacent stalls of the iron tower, lead to mechanical damage, and also cause the arc sag to increase, reduce the electrical safety distance, and cause problems such as line flashover and tripping; On the other hand, the natural vibration frequency of the wire will be greatly reduced with the deepening of the ice coating. Under the excitation of wind load, it is easy to cause vibration damage forms such as galloping, deicing and jumping. The outage of transmission lines has brought great inconvenience to people's production and life. [0...

AI Technical Summary

Problems solved by technology

On the one hand, the icing of the transmission wire will increase the static tension of the wire, cause the unbalanced tension of the adjacent stalls of the iron tower, lead to mechanical damage, and also cause the arc sag to increase, reduce the electrical safety distance, and cause problems such as line flashover and tripping; On the other hand, the natural vibration frequency of the wire will be greatly reduced with the deepening of the ice coating. Under the excitation of wind load, it is easy to cause vibration damage forms such as galloping, deicing and jumping. The outage of power transmission lines has brought great inconvenience to people's production and life

Images