Research on Electromagnetic Environment of ±800 kV and ±500 kV Double-Circuit DC Transmission Lines with Different Tower Configurations

doi:10.11930/j.issn.10.11930.2015.10.65

Abstract

Abstract: ±800 kV and ±500 kV Mixed-Voltage double-circuit DC transmission lines can be considered for solving the contradiction between growing electricity demand and limited line corridor. However, without previous design and operation experience, it is of great significance to study tower configurations during lines design. The electromagnetic environment of four tower types with corresponding pole arrangements are investigated by upstream finite element method. Indicators such as total electric field and ion flow density at ground level, radio interference and audible noise, minimum line height and line corridor width are calculated. Furthermore, tower size threshold is analyzed and compared based on electromagnetic environment limits. According to comprehensive comparison, optimal tower configuration of ±800 kV and ±500 kV double-circuit DC transmission lines is suggested. The electromagnetic environment of the recommended tower under different operating conditions is analyzed, which can provide reference for engineering practice.This work is supported by National Natural Science Foundation of China(No. 51477120) and National Basic Research Program of China (973 Program) (No.2011CB209404).

Key words: DC transmission lines, mixed-voltage lines on the same tower, upstream finite element method(FEM), tower configuration, electromagnetic environment

CLC Number:

TM722

LI Lingyan, CHEN Yuan, DU Zhiye, LI Jian, RUAN Jiangjun, HUANG Guodong. Research on Electromagnetic Environment of ±800 kV and ±500 kV Double-Circuit DC Transmission Lines with Different Tower Configurations[J]. journal1, 2015, 48(10): 65-70.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.10.65

https://www.electricpower.com.cn/EN/Y2015/V48/I10/65

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