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A Method for Optimizing the Sequence of Mechanical Deicing of Transmission Lines Based on Particle Swarm Optimization

A particle swarm algorithm and transmission line technology, applied in the installation of overhead lines/cable equipment, electrical components, cables, etc., can solve problems such as the unbalanced force of towers or wires exceeding the safety threshold, so as to simplify the deicing process and ensure deicing The effect of ice safety and small deicing paths

Inactive Publication Date: 2017-12-12
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the unbalanced force on the tower or the wire exceeds the safety threshold when the current mechanical deicing of the transmission line does not consider the deicing sequence

Method used

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  • A Method for Optimizing the Sequence of Mechanical Deicing of Transmission Lines Based on Particle Swarm Optimization
  • A Method for Optimizing the Sequence of Mechanical Deicing of Transmission Lines Based on Particle Swarm Optimization
  • A Method for Optimizing the Sequence of Mechanical Deicing of Transmission Lines Based on Particle Swarm Optimization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0152] The simulation example is shown in the table below in the case of five gears

[0153] number of files

first gear

second gear

third gear

fourth gear

fifth gear

Gap (m)

700

300

600

500

400

Height difference (m)

70

-10

60

100

80

[0154] Other conditions: wire stress is 59.36N / mm 2 , the wire temperature is 0°C; the actual temperature is -5°C, the wire type is LGJ 300 / 40, and the design maximum stress is 109N / mm 2 , The length of the insulator string is 5.2 meters, the string weight is 2300N, and the ice thickness of each gear is 22.5mm.

[0155] see figure 1 , the particle swarm optimization algorithm to optimize the mechanical deicing sequence of the line is specifically used as follows:

[0156] Step 1: Algorithm initialization; read in the ice coating thickness information and the static information of the overhead line, the ice coating thickness information is the ice coating thickness of...

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Abstract

The invention discloses a power transmission line mechanical deicing order optimization method based on a particle swarm algorithm. At first, the deicing order is optimally selected by means of the particle swarm algorithm, so that the deicing order ensuring that the unbalanced force borne by a tower and wires in the deicing process is within the safety range and the deicing path is the smallest. The method includes 1. particle population generation and imbalance force calculation, 2. fitness function establishment, 3. particle swarm optimization strategy making, and 4. deicing order generation and optimization. According to the method, the problem that the tower has faults because the deicing order is not considered during the mechanical deicing in the prior art, and the unbalanced force borne by the tower exceeds the tower design strength can be solved, and the deicing path is the smallest while the tower safety is guaranteed. The deicing order is optimally selected by means of the particle swarm algorithm, and an optimal deicing order is selected according to the fitness, so that the bearing force of the lines and the tower don't exceed the safety threshold and the deicing path is the smallest when the mechanical deicing is carried out according to the optimized deicing order.

Description

technical field [0001] The invention belongs to disaster prevention and mitigation and security defense of electric power system, in particular to a method for optimizing the mechanical deicing sequence of power transmission lines based on particle swarm algorithm. Background technique [0002] Transmission line deicing technology will be an important means of defense against icing disasters on transmission lines. With the development of robotic deicing technology, among the existing deicing methods, the mechanical deicing method is one of the methods with the most potential for large-scale application. However, mechanical deicing is carried out in different gear intervals. If the deicing strategy is not considered, it may cause negative effects during the deicing process. During the de-icing process, even if the transmission line is not seriously iced, the unbalanced force on both sides of the tower may cause the tower to be stressed beyond its limit. Therefore, in order ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G7/16H02G1/02
CPCH02G1/02H02G7/16
Inventor 谢云云黄琳雁唐锐宋雯雯宋坤隆石屹岭张成卜京殷明慧姚娟邹云蔡晨晓张俊芳
Owner NANJING UNIV OF SCI & TECH
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