110kV双回交流T接塔电场仿真分析
CSTR:
作者:
通讯作者:

杨文刚(1982),男,博士,副教授,主要从事输电线路结构设计及其安全运行技术研究;Email:hdywg@126.com

中图分类号:

TM152

基金项目:

国家自然科学基金(51608195);中央高校基本科研业务费专项(2018MS122)


Simulation analysis of electric field of 110 kV doublecircuit AC Ttower
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    摘要:

    T接塔在工程实际中取得较好应用的同时增加了塔身周围电场分布的复杂程度。在此背景下,为了确定T接塔下方以及塔身典型作业位置处的电场分布,以一种110 kV双回交流T接塔为研究对象,应用三维有限元软件COMSOLMultiphysics对T接塔塔身、导线等部件建立模型,研究T接塔附近的电场分布、线路在不同相序布置和同相序布置2种情况下地面上方1.5 m处的电场分布情况以及塔身典型作业位置处的电场强度。研究结果表明:线路采用同相序布置时对T接塔下方的电场分布影响最大,地面上方1.5 m处电场的最大值出现在T接线路一侧;T接塔下方以及塔身的典型作业位置处场强均处于安全范围内。计算结果可为输电线路T接方案设计提供参考。

    Abstract:

    The Tconnected tower has achieved a good application in the engineering practice. However, it increases the complex degree of electric field distribution around the tower body. In order to obtain the electric field distribution under the Ttower and around the typical working position of tower body, a 110kV doublecircuit AC Tconnected tower is studied in this paper. Firstly, a model consisting of a Ttower body and wires is established by using threedimensional finite element software COMSOL Multiphysics. Then, the electric field distribution around Tconnected tower is studied. The electric field distribution around the location 1.5m above the ground and the electric field intensity of typical working position on tower body are analyzed under the situation of inconsistent and consistent phase sequence arrangement respectively. It is shown that the inconsistent phase sequence arrangement of doublecircuit line corresponds to the greatest influence to the electric field distribution under Tconnected tower. The maximum value of the electric field at 1.5m above the ground appears on the side of the Tconnected line. The electric field intensities of the location under Tconnected tower and the typical working position of tower body are within safe ranges. The calculation results provide references for the Tconnection design of transmission line.

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杨文刚,杨发.110kV双回交流T接塔电场仿真分析[J].电力科学与技术学报,2020,35(5):138-143.
YANG Wengang, YANG Fa. Simulation analysis of electric field of 110 kV doublecircuit AC Ttower[J]. Journal of Electric Power Science and Technology,2020,35(5):138-143.

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  • 在线发布日期: 2021-04-16
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