Grounding state of Overhead Line Tower in transmission grids has an important significance for security and steady operation of power system.
输电线路杆塔接地状况对电力系统的安全稳定运行具有重要意义。
Its material content is how establish Geographic Information System for Overhead Transmission Line (OTLGIS) that is based on "3s" technique.
该项目具体研究内容，就是以“3s”技术为基础，建立架空送电线路地理信息系统(otlgis)。
Research conclusions:According to the research results, the DC 1 500 V rigid suspension overhead catenary system is recommended for the first metro line of Haerbin.
研究结论：根据研究的结果，推荐哈尔滨地铁一期工程正线采用DC1 500V架空刚性悬挂。
The overhead line of HVDC power transmission system needs positive and negative leads only, allowing for high power, low loss and long distance power transmission;
高压直流输电系统架空线路只需正负两 极导线，可实现大功率、低损耗、长远距离电力的直接输送；
The railway overhead line-pantograph system is one of the most important components of the electrical locomotive, which is the only way to provide power for the electrical locomotive effectively.
弓网系统是电力机车的重要组成部分之一，是给电力机车提供动力的唯一有效途径。
The railway overhead line-pantograph system is one of the most important components of the electrical locomotive, which is the only way to provide power for the electrical locomotive effectively.
弓网系统是电力机车的重要组成部分之一，是给电力机车提供动力的唯一有效途径。
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