An improved method to calculate the radio interference of a transmission line based on the flux-corrected transport and upstream finite element method

作者：Deng Jun^*; Hao Yanpeng; Li Licheng

来源：Journal of Electrostatics, 2015, 75: 1-4.

DOI：10.1016/j.elstat.2015.02.002

• Radio interference
• High voltage direct current
• Transmission lines
• Corona
• Finite element method

The radio interference (RI) from HVDC transmission lines can block communication systems. In this paper the RI of a HVDC transmission line has been analyzed by the superposition of the electromagnetic field generated by the corona current based on phase-model transformation, where the corona current can be solved by the flux-corrected transport and finite difference method combining the upstream finite element method for bipolar conductor model instead of corona cage or excitation function. Our calculated values for 0.5 MHz RI from the proposed method compare well with measured values from a 800 kV HVDC test line established in China. With this validation, we find that RI should increase with temperature, increase with altitude, and vary in a complex way with relative humidity. Therefore, the proposed method can be adopted in transmission lines design and electromagnetic environment evaluation.

• 出版日期2015-6
• 单位南方电网科学研究院有限责任公司; 华南理工大学