高电压技术2011，Vol.37Issue(11)：2866-2872,7.
Analysis on Electric Field Around HVAC-HVDC Hybrid Transmission Lines
Analysis on Electric Field Around HVAC-HVDC Hybrid Transmission Lines
LI Qian 1LIU Jun-xiang 2LI Hua 3LIN Fu-chang3
作者信息
- 1. Guangdong Electric Power Design Institute, Guangzhou 510663, China
- 2. Guangzhou Power Supply Bureau, Guangzhou 510620, China [3]College of Electrical ＆ Electronic Engineering, Huazhong University of Science ＆ Technology, Wuhan 430074, China
- 折叠
摘要
Abstract
As the transmission line corridors become more and more rare in China, it is now inevitable for people to construct HVAC-HVDC hybrid transmission lines. The research on the electric field around the transmission lines plays an important role in evaluating the electromagnetic environment nearby. However, few existing research now considered the mutual effect of HVAC-HVDC hybrid transmission lines. Thus, this research designed a program based on windows, which calculated the surface voltage gradient on the transmission lines and the electric field at ground level respectively. This research calculated the surface voltage gradient on the transmission lines by applying the improved method of successive images. For the electric field at ground level under AC transmission line, simula- tion charge method is used, while for the electric field at the ground level under DC transmission lines, deutsch as- sumption method is used. Comparing the results generated by the calculation with those in published literature, the program is reliable. Taking 500 kV transmission lines as an example, when considering the mutual effect of the HVAC-HVDC＇lines, the amplitude of the surface voltage gradient will increase by about 10% and the amplitude of the electric field at ground level will increase by about 8%, making the mutual effect of the AC and DC lines unneglectable. Larger part of the electric field at ground level under hybrid lines is produced by the DC line. Thus, in order to control the electric field at ground level under hybrid lines, it should pay more attention on that produced by the DC line.关键词
hybrid transmission lines/method of successive images/simulation charge method/deutsch assumption methodconductor surface gradients the ionized fieldKey words
hybrid transmission lines/method of successive images/simulation charge method/deutsch assumption methodconductor surface gradients the ionized field分类
信息技术与安全科学引用本文复制引用
LI Qian,LIU Jun-xiang,LI Hua,LIN Fu-chang..Analysis on Electric Field Around HVAC-HVDC Hybrid Transmission Lines[J].高电压技术,2011,37(11):2866-2872,7.
