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[1] Xia Kaiquan, Liu Yun, Qian Zhendong,. Nonlinear dynamical response of high-voltage transmission linesbased on cable dropping [J]. Journal of Southeast University (English Edition), 2009, 25 (1): 52-56. [doi:10.3969/j.issn.1003-7985.2009.01.012]
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Nonlinear dynamical response of high-voltage transmission linesbased on cable dropping()
高压输电线路导线跌落非线性动响应分析
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
25
Issue:
2009 1
Page:
52-56
Research Field:
Electrical Engineering
Publishing date:
2009-03-30

Info

Title:
Nonlinear dynamical response of high-voltage transmission linesbased on cable dropping
高压输电线路导线跌落非线性动响应分析
Author(s):
Xia Kaiquan1;  Liu Yun2;  Qian Zhendong2
1China Electric Power Research Institute, Beijing 100055, China
2Intelligent Transportation System Research Center, Southeast University, Nanjing 210096, China
夏开全1;  刘云2;  钱振东2
1中国电力科学研究院, 北京 100055; 2东南大学智能运输系统研究中心, 南京 210096
Keywords:
high-voltage transmission line;  transient response;  cable dropping;  numerical simulation;  finite element method
高压输电线路;  瞬态响应;  导线跌落;  数值模拟;  有限单元法
PACS:
TM753
DOI:
10.3969/j.issn.1003-7985.2009.01.012
Abstract:
In order to study the dynamic response of high-voltage transmission lines under mechanical failure, a finite element model of a domestic 500-kV high-voltage transmission line system is established.The initial equilibrium condition of the coupling system model is verified by nonlinear static analysis.The transient dynamic analysis method is proposed to analyze the variation law of dynamic response under cable or insulator rupture, and the dynamic response of structural elements next to the broken span is calculated.The results show that upper crossarm cable rupture has no effect on cable tension at adjacent suspension points, but it has a significant influence on tension in the insulator and the tower component of the upper crossarm next to the broken span.The peak tension in the conductor of the upper crossarm at the suspension point exceeds the design value under insulator rupture.Insulator rupture has no effect on the tower component of the upper crossarm, but it has a significant influence on insulator tension of the upper crossarm.Insulator rupture should be taken into account in the design of overhead transmission lines.The research results can provide a theoretical basis for the design of transmission lines.
为了研究机械性故障对高压输电线路耦合体系的受力影响, 建立了输电线路耐张段的非线性耦合体系模型, 通过导线找形非线性静力计算确定了耐张段的初始平衡状态.采用瞬态动力分析方法计算了导线、绝缘子破坏失效危险工况下的输电线路耦合体系非线性动响应.分析结果表明, 上横担一组导线断裂失效对邻近端导线张力没有明显影响, 对邻近端的绝缘子及铁塔横担构件的受力有较大的影响;上横担一组绝缘子破坏失效后, 破坏档未破坏端导线的张力超过了技术规程中的设计值;导线的跌落对破坏档未破坏端的上横担绝缘子受力有较大的影响, 而对上横担铁塔杆件没有明显的影响;在架空送电线路的设计中应该考虑绝缘子断裂的荷载工况.研究成果可为输电线路结构设计提供理论依据.

References:

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Memo

Memo:
Biography: Xia Kaiquan(1969—), male, doctor, senior engineer, xiakq@epri.ac.cn.
Foundation items: The National Natural Science Foundation of China(No.50578038), the Science and Technology Project of the State Grid Corporation of China(No.SGKJ [2007]116).
Citation: Xia Kaiquan, Liu Yun, Qian Zhendong.Nonlinear dynamical response of high-voltage transmission lines based on cable dropping[J].Journal of Southeast University(English Edition), 2009, 25(1):52-56.
Last Update: 2009-03-20