Altitude Correction of Radio Interference of HVdc Transmission Lines Part II: Measured Data Analysis and Altitude Correction

作者：Zhao, Luxing^*; Cui, Xiang; Xie, Li; Lu, Jiayu; He, Kun; Ju, Yong

来源：IEEE Transactions on Electromagnetic Compatibility, 2017, 59(1): 284-292.

DOI：10.1109/TEMC.2016.2597304

• Altitude correction
• high-voltage direct current (HVdc) transmission lines
• radio interference (RI)
• test lines

The prediction and control methods of radio interference (RI) for HVdc transmission lines passing through high-altitude region are main key factors in design of the HVdc transmission lines. In order to obtain the altitude effect and correction ofRI for HVdc transmission lines, fourHVdc reduced-scale test lines with the same parameters were built up at 50, 1700, 3400, and 4300 m elevation, respectively. Simultaneously, two HVdc full-scale test lines with the same conductor type of 4xJL/G1A-500/45 had been set up at altitude 50 and 4300 m as well, respectively. Using these test facilities, a lot of RI measured data were accumulated in a long time span, from Jan. 2010 to Jul. 2014. By analyzing the RI measurement data at different altitude regions, it is indicated that the altitude correction of RI has a nonlinear relation to the altitude. Meanwhile, the RI altitude correction formula for HVdc transmission lines has been proposed in this paper. Using the proposed RI altitude correction formula, the RI levels at high altitude are lower than that predicted by using the RI correction formula of ac transmission lines, which means that it could save a lot of investments at high altitudes.

• 出版日期2017-2
• 单位华北电力大学; 华北电力大学（保定）; 中国电力科学研究院