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Distributed overhead wire deicing jump experiment system

A technology of de-icing jumping and overhead conductors, applied in the field of power transmission and distribution, can solve problems such as poor scalability, and achieve the effects of improving ice resistance, high consistency, flexibility and scalability

Active Publication Date: 2018-05-01
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But above-mentioned system mainly has following defect: 1) to the speed of acquisition signal processing
2) The system has only one control core, which is a star connection mode, and the scalability is poor

Method used

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  • Distributed overhead wire deicing jump experiment system
  • Distributed overhead wire deicing jump experiment system
  • Distributed overhead wire deicing jump experiment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] Embodiment: Using the present invention, a section of overhead wire with a span of 130 meters is used to simulate a deicing jump test, and its basic working conditions are shown in Table 1 below.

[0044] Table 1 Deicing jump test conditions

[0045]

[0046] The mass of the adjustable ice-coating weight can be adjusted to simulate the icing condition with no thickness. In this experiment, 20 weights are suspended at equal intervals to simulate the ice coating. The mass distribution of the adjustable ice-coating weight is shown in Table 2.

[0047] Table 2 Adjustable icing weight distribution

[0048] Icing Thickness mm

The total mass of ice coating kg

The mass of each adjustable ice-coated weight kg

5

37.73

1.89

10

89.58

4.48

15

155.57

7.78

[0049] The present invention is used to collect the time-history curves of the dynamic tension of the deicing and jumping overhead wires under various test working cond...

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Abstract

The invention discloses a distributed overhead wire deicing and jumping experiment system, which belongs to the technical field of power transmission and distribution. The system includes four parts: a deicing and jumping experiment module, a deicing control module, a dynamic tension acquisition module and a conductor jumping displacement acquisition module. Among them, the deicing jump experiment module establishes the experimental basic environment, the deicing control module receives the timing configuration instructions sent by the deicing control system, and executes deicing actions according to the specified timing after receiving the deicing control instructions, and the dynamic tension acquisition module The dynamic tension during the de-icing and jumping process of the overhead conductor is collected in real time, and its dynamic characteristics are obtained through time-frequency domain analysis. Displacement time history curve.

Description

technical field [0001] The invention relates to an overhead wire deicing and jumping experiment system, which belongs to the technical field of power transmission and distribution. Background technique [0002] Icing often occurs on overhead conductors in winter. Due to the effects of temperature rise, natural wind or human percussion, the ice coating detaches from the overhead conductors to generate a de-icing jump dynamic process. After the wire is deiced, there will be a change in the up and down shape, which will be reflected in the end tension to form a changing dynamic tension condition. Different from the static load, the dynamic tension has a great impact on the structural safety of the transmission tower. In the ice and snow disasters in 2008, about 90% of the collapsed towers were caused by the impact of the dynamic tension formed by the deicing jump on the tower. Therefore, it is of great significance to study the nonlinear dynamic process of deicing jumping. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
Inventor 王璋奇王剑王孟齐立忠
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)