我国架空线路新型输电技术的发展及展望

当前，采用百万伏级输电是人们议论的焦点问题之一，而提高单位输电走廊传输功率也是当前的热门话题。采用紧凑型输电技术、大截面导线输电技术、耐热导线输电技术及同塔多回输电技术等是提高架空输电线路单位输电走廊传输功率的基本措施。本文对这几类新型输电技术当前的国内外动态、研究成果、应用（运行）情况进行了概述，对于了解新型输电技术当前的国内外动态、研究成果有所益处，同时又可以参照和借鉴国内的工程实际。本文从线路传输功率的运行特性出发简述了线路传输功率大于、等于、小于自然功率的运行状态与电力系统稳定的关系，分析了各种新型输电技术的要点、优势和存在的主要问题，以及今后的发展方向。

Nowadays, adoption of MV power transmission is one of the key issues discussed by people, while raising the transmission capacity of the unit power transmission corridor is also the current hot topic. The basic measures for raising the transmission capacity of unit power transmission corridor on the overhead transmission lines are to adopt the compact power transmission technology, large-section conductor transmission technology, heat-resistant conductor transmission technology and power transmission technology of multi-circuit lines on the same tower. The Paper presents an overview on the Chinese and foreign dynamic development, research achievement and application （operation） of these new power transmission technologies, for a better understanding the current Chinese and foreign dynamic development and research achievements of new power transmission technologies as well as for the projects in China as reference. The Paper starts with the operation features of the line transmission capacity to brief about the relation of the operation status of line transmission capacity （being greater than, equal to or lower than the natural capacity） with the stability of power system and analyzes the key points, advantages and existing problems of different new power transmission technologies and their future development orientation.