A Theoretical Algorithm for Jump Heights of Iced Transmission Lines After Ice Shedding

WU Chuan; YAN Bo; ZHANG Liang; ZHANG Bo; LI Qing

doi:10.3879/j.issn.1000-0887.2016.02.001

Volume 37 Issue 2

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WU Chuan, YAN Bo, ZHANG Liang, ZHANG Bo, LI Qing. A Theoretical Algorithm for Jump Heights of Iced Transmission Lines After Ice Shedding[J]. Applied Mathematics and Mechanics, 2016, 37(2): 117-126. doi: 10.3879/j.issn.1000-0887.2016.02.001

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A Theoretical Algorithm for Jump Heights of Iced Transmission Lines After Ice Shedding

doi: 10.3879/j.issn.1000-0887.2016.02.001

WU Chuan¹,
YAN Bo^1,2,
ZHANG Liang¹,
ZHANG Bo^3,4,
LI Qing^3,4

¹College of Aerospace Engineering, Chongqing University, Chongqing 400044, P.R.China;²State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University), Chongqing 400044, P.R.China;³Electric Power Research Institute, Henan Electric Power Company, Zhengzhou 450052, P.R.China;⁴Key Laboratory of Galloping Simulation Technology for Transmission Lines, State Grid Corporation, Zhengzhou 450052, P.R.China

Funds: The National Natural Science Foundation of China(51277186)

Received Date: 2015-10-21
Rev Recd Date: 2015-11-04
Publish Date: 2016-02-15

Abstract

Abstract

An analytical model for multi-span transmission lines to estimate jump heights after ice shedding was set up, and an algorithm for the jump heights was developed by means of the energy equation, stress-sag relation, deformation and balance relation of the lines during the motion after ice shedding. The algorithm was verified through the comparison of the line jump heights determined respectively with the present algorithm, the finite element method and the Morgan theoretical algorithm. Furthermore, the present algorithm, the finite element method and the formula proposed in the Chinese design code for transmission lines were employed to evaluate the jump heights of typical transmission lines with different parameters after ice shedding, based on which the practicability of the present algorithm was discussed. It is indicated that the present algorithm could be used easily and quickly to determine the isolation clearance in the design of transmission lines located in icing zones.
- iced transmission line,
- ice shedding,
- jump height,
- theoretical algorithm,
- numerical simulation

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References(20)

References

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