Study on Electromagnetic Environment of ±500 kV Triple-circuit Flexible DC Transmission Line on Same Tower

被引：0
|
作者：
Ma X. [1 ,2 ]
He K. [1 ]
Xie L. [1 ]
Lu J. [1 ]
Ju Y. [1 ]
机构：
[1] China Electric Power Research Institute, Haidian District, Beijing
[2] Department of Electrical Engineering, Tsinghua University, Haidian District, Beijing
来源：
Ma, Xiaoqian (mxqian228@163.com) | 1978年 / Power System Technology Press卷 / 44期
关键词：
Audible noise; Conductor selection; Electromagnetic environment; Line-to-ground distance; Radio interference; Total electric field; Triple-circuit DC line on the same tower;
D O I：
10.13335/j.1000-3673.pst.2019.1247
中图分类号：
学科分类号：
摘要：
According to the characteristics of multi-terminal friendly access and networking of flexible DC power grid, and considering current situation of increasingly scarce corridor resources, it is urgentto construct ±500 kV flexible DC triple-circuit line on the same tower. To meet the requirements of environmental protection, it is necessary to reasonably select the operation mode and line parameters of ±500 kV flexible DC triple-circuit transmission lines on the same tower. By using EPRI and CISPR empirical formulasand superposition principle, the audible noise (AN) and radio interference (RI) for different conductor modes are studied, and then the minimum size conductor meeting the AN and RI limit requirements under different pole-conductor bundle arrangements are determined. The total electric field of ±500 kV flexible DC triple-circuit line on the same tower with different conductor arrangements are calculated and analyzed with the numerical algorithm based on upstream finite element method. Then, under different arrangement of polar conductors, the minimum line-to-ground distances satisfying the limits of total electric field are given. In view of the engineering requirement of adding the bipolar DC line to existing single or double-circuit DC line to make it a triple-circuit DC line on the same tower, the electromagnetic environment parameters before and after line addition is analyzed. It is found out that, under appropriate arrangement of pole-conductor bundles, the electromagnetic environment parameters of the new line can meet the requirements of environmental protection. © 2020, Power System Technology Press. All right reserved.
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页码：1978 / 1984
页数：6
相关论文
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