输电线路中杆线结构的抗风监测技术
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通讯作者:

梁庆国(1987),男,硕士,工程师,主要从事结构分析及金属材料无损检测等研究;Email:lxtx100@163.com

中图分类号:

TM754

基金项目:

广西电网有限责任公司科技项目(GXKJXM20151021)


Research on wind resistance and monitoring technology for poleline structure in transmission lines
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    摘要:

    针对华南沿海地区输电线路经常遭受台风威胁这一事实,对10 kV输电线路中典型水泥杆线结构抗风监测技术开展了研究。首先,建立适用于杆线结构的抗风监测系统。接着,提出监测系统中的预警值确定方法,并建立杆线整体有限元动力模型,采用风-杆流固耦合模型将风速转化为风荷载,将风荷载作用于模型中确定风速预警值。最后,通过实际工程运用结果验证了提出的杆线结构抗风监测技术的正确性。通过研究表明:风对导线表面的作用力是不均匀的,通过风-导线流固耦合模型可以准确地将风速转化为导线上的风荷载;将风荷载作用于杆线整体有限元模型中得到的结构响应能够准确的反映结构的实际受力状态,可用于风速预警值的确定;提出的输电线路中杆线抗风监测系统得到了实际工程验证,可推广运用。

    Abstract:

    Power transmission lines in the coastal areas of South China are often threatened by typhoons. This paper aims to study windresistance and windmonitoring technologies for typical cement poleline structures in 10kV distribution lines. Firstly, a windresistant monitoring system for poleline structures is established. Then, a method is proposed to determine the threshold in the monitoring system. A finite element model for a whole rodline is established. By using the fluidstructure coupling model to calculate the windrod system, the value of wind speed is transformed into the wind load which is generally used as the threshold of wind speed in early warning stage. Finally, the windresistant monitoring technology of polelines is verified by the monitoring results in practical operation. It is shown that the wind load at the surface of conductors is inhomogeneous. The wind load can be accurately calculated through the fluidsolid coupling model of the windpole system. And The structural response obtained by the model accurately reflects the actual stress state of the structure, which can be used to determine the threshold of wind speed in the early warning stage. The windresistant monitoring system of poleslines proposed in this paper has been verified by practical projects.

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梁庆国,梁世容,彭家宁,等.输电线路中杆线结构的抗风监测技术[J].电力科学与技术学报,2020,35(1):181-186.
LIANG Qinguo, LIANG Shirong, PENG Jianing, et al. Research on wind resistance and monitoring technology for poleline structure in transmission lines[J]. Journal of Electric Power Science and Technology,2020,35(1):181-186.

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  • 在线发布日期: 2020-08-20
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