Analysis on Static Mechanical Characteristics of Down Lead Transmission Lines and Connecting Fittings in Ultra High Voltage Substation

LYU Zhongbin; XIE Kai; ZHANG Xizhuo; ZHANG Bo; ZHANG Meng

doi:10.13296/j.1001-1609.hva.2017.09.006

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Analysis on Static Mechanical Characteristics of Down Lead Transmission Lines and Connecting Fittings in Ultra High Voltage Substation

更新时间：2025-04-26

- Analysis on Static Mechanical Characteristics of Down Lead Transmission Lines and Connecting Fittings in Ultra High Voltage Substation
- High VoltageApparatus Vol. 53, Issue 9, Pages: 30-37(2017)
- 作者机构：
  
  1. 国网河南省电力公司电力科学研究院国网输电线路舞动防治技术重点实验室
  2. 郑州大学土木工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.09.006
  CLC： TM63
- Published：2017
- 稿件说明：
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[1]吕中宾,谢凯,张习卓,张博,张猛.特高压变电站引下线及连接金具系统力学特性分析[J].高压电器,2017,53(09):30-37.

LYU Zhongbin, XIE Kai, ZHANG Xizhuo, et al. Analysis on Static Mechanical Characteristics of Down Lead Transmission Lines and Connecting Fittings in Ultra High Voltage Substation[J]. High voltageapparatus, 2017, 53(9): 30-37.
[1]吕中宾,谢凯,张习卓,张博,张猛.特高压变电站引下线及连接金具系统力学特性分析[J].高压电器,2017,53(09):30-37. DOI： 10.13296/j.1001-1609.hva.2017.09.006.

LYU Zhongbin, XIE Kai, ZHANG Xizhuo, et al. Analysis on Static Mechanical Characteristics of Down Lead Transmission Lines and Connecting Fittings in Ultra High Voltage Substation[J]. High voltageapparatus, 2017, 53(9): 30-37. DOI： 10.13296/j.1001-1609.hva.2017.09.006.

摘要

以某1 000 kV特高压变电站实际工程为背景

采用ABAQUS软件建立了引下线及其连接金具系统的有限元模型

分析了不同风速对应的等效静力风荷载作用下的连接金具的受力特性

探讨了接线柱金具形式及引下线不同吊点位置和不同连接形式对连接金具受力性能的影响。研究表明:采用一字型金具形式的高压套管接线柱要明显优于采用羊角型金具的形式

但需要对一字型金具本身做加强处理;引下线上吊点位置偏移对各构件受力影响较大

安装施工时应尽量减少偏移量;从受力角度来看

II字形引下线形式要明显优于人字形引下线形式。

Abstract

Taking a 1 000 kV ultra high voltage substation（UHV substation） project as background

a study on the mechanicalcharacteristicsof fittings under wind load has been carried out. Using ABAQUS software to establish the finite element model of down lead transmission lines and connecting fittings

the nonlinear static analysisis performed to evaluate the mechanical characteristics of the structure. The hardware form

hanging position and connection of down lead transmission lines are discussed also to evaluate the effects on mechanical performance of connection fittings. The results show that

high voltage bushing with "一"-shaped terminal fittings is obviously superior to that with "L"-shaped ones. However

the"一"-shaped hardware itself need to be strengthen. The hanging position of down lead transmission lines has great influence on the mechanical properties of connect fittings

and it is suggested that one should try to reduce the hanging position offset during installation and construction. In view of suffering strength point

the "II"-shaped down lead transmission linesare significantly better than that of herringbone-shaped ones.

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