该法用于地铁牵引变电站直流馈线电缆绝缘性能检测中，取得了良好的效果。
This method is applied to detect the insulation of feeder line cable in metro substations and has already obtained good result.
介绍了地铁直流牵引供电系统框架泄漏保护的优化设计方案。
This paper mainly introduces an optimum design scheme for the frame leakage current protection of DC traction power supply system in metro engineering.
通过加速试验方法研究了直流电流作用下混凝土筛余砂浆的溶蚀性能，并建立了其与广州地铁工程混凝土在杂散电流下的溶蚀性能之间的关系。
The dissoluble corrosion of Guangzhou metro engineering concrete in direct current was studied by an accelerated DC dissolving test of the residue mortar and correlating it with concrete.
地铁直流供电的保护与控制系统对确保地铁的安全可靠运行起着关键作用。
The protection and control system in subway DC power supply systems play a key role in ensuring the safety and reliability of the subway.
分析了地铁直流杂散电流对埋地燃气管道干扰腐蚀的机理与影响，并简述了埋地燃气管道直流杂散电流干扰腐蚀的防护方法。
The mechanism and influence of subway stray current corrosion on buried metal pipeline is analyzed, and the measure of disturbing stray current corrosion is narrated briefly.
随着城市地铁的大力发展，研制更加完善的直流保护正是应时之需。
With the rapid development of subway, it is necessary to consummate the protection for DC traction power supply system.
通过对24脉波换流站进行精确建模，将换流站两侧的直流网络和交流网络联系起来，运用交直流潮流迭代计算的方法计算地铁供电网络的潮流分布。
AC network with DC network are also combined in a AC-DC iterative power flow calculation program through the detailed model of 24-pulse bridge rectifier.
阐明地铁直流牵引供电系统电气保护设置与定值的重要性，着重论述地铁电气保护设置的主要原则。
The significance of electrical protection and definite value of DC traction power supply system for metro is illustrated.
另一方面，地铁牵引供电网络是一个交直流混合的网络，运行方式较为复杂。
On the other hand, since traction power supply network is a AC-DC network, its running modes are complicated.
介绍广州地铁1号线车辆电子控制装置冷却风扇的国产化技术方案、电路结构和原理及直流无刷风扇的风叶材料和轴承。
It is presented the localized technical scheme, circuit structure and principles for the cooling fan of control electronics for Guangzhou metro line 1 vehicles.
负阻抗会引起地铁车辆牵引变流器直流侧电压、电流振荡，降低牵引传动系统稳定性。
Negative impedances lead to DC-link voltage and current oscillation in metro traction converters and so to reduction of stability of traction drive systems.
介绍了地铁直流牵引供电系统保护的原理，和所采用的几种直流馈线保护方法。
The principle of the relay protection of multi-car's DC traction supply system and the several DC feeder protection methods were presented.
该法用于地铁牵引变电站直流馈线电缆绝缘性能检测中，取得了良好的效果。
This method is applied to detect the insulation of feeder line cable in metro substat…
本文建立地铁牵引变流器关注直流侧的系统小信号模型，详细分析直流侧振荡的产生机理。
In this paper the small signal model following the DC-link of the traction converter system is established and the mechanism of DC-link voltage and current oscillation is analyzed in detail.
该产品适用于城市交通地铁或轻轨或安全性、可靠性要求较高的直流用电区域。
This product is suitable for metro or other D. C. area with much requirements for security and reliability.
该法用于地铁牵引变电站直流馈线电缆绝缘性能检测中，取得了良好的效果。
This method is applied to detect the insulation of feeder line cable in metro substations and has already obtained good r...
该法用于地铁牵引变电站直流馈线电缆绝缘性能检测中，取得了良好的效果。
This method is applied to detect the insulation of feeder line cable in metro substations and has already obtained good r...
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