科研之友
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摘要
It is a serious problem in the development of power transmission technology in China that the high-voltage direct-current (HVDC) transmission lines have to pass through the high-altitude areas. To satisfy the demands of environmental protection, it is important to predict radio interference (RI) performance of the HVDC transmission lines in the high-altitude areas. The existing method to evaluate the altitude effect on RI of the HVDC transmission lines refers to the conclusion of the alternating-current (AC) transmission lines, because of lack of supporting HVDC test data. It was found by the measurement data on Qinghai-Tibet +/- 500 kV DC transmission line built in China that the ac altitude correction conclusion of RI is inappropriate for the HVDC transmission lines in the high-altitude regions of China. In this paper, RI experiments were carried out on two full-scale HVDC test lines and four reduced-scale dc test lines at different altitudes in China from 2010 to 2014. The method to convert the data on the test lines with different lengths and terminations into that of the infinite-long lines is proposed and verified; then the measurement data of the full-scale and reduced-scale test lines were converted by this method to derive the RI altitude correction of the HVDC transmission lines. It is proved that the proposed method may provide a feasible way to obtain RI altitude correction of the HVDC transmission lines.
- 出版日期2017-2
- 单位华北电力大学; 中国电力科学研究院; 华北电力大学（保定）
