LDDC Long Distance D.C. line signaling是什么意思

网络释义

用法例句

On the basic of the analytical results, a new scheme of long transmission line current differential protection by using instantaneous value after equal transfer proces.

在此基础上,提出一种用于远距离输电线路保护的等传变瞬时值差动保护方法,该方法从线路一次电气量到用于差动保护计算的瞬时值,电压和电流经过的传变环节基本相同。

Based on the characteristics of long transmission line operation, a theory of integrative voltage compensation is put forward and the mathematical model of comprehensive voltage compensation is built.

根据远距离输电线路的运行特点，提出了综合电势补偿理论，建立了综合电势补偿的数学模型，分析了综合电势补偿对系统稳态特性和暂态特性的影响，并讨论了综合电势补偿的硬件实现原理。

Analysis and Evaluation of the Methods of Electromagnetic Transient Computation on EHV Long Distance Transmission Line

超高压远距离输电线路电磁暂态计算方法的分析与评价

HVDC transmission is extremely economical for long distances where generation sites are remote from load centers because of lower transmission line costs.

由于较低的输电线路造价,高压直流输电对发电地点远离负荷中心的远距离输电极为经济。

Study on Protection of QingZang Railway Distribution System with Long Distance Transmission Lines;

青藏铁路超长距离输电线路保护研究

Research and Application of New Type Distance Protection of Power Line;

输电线路新型距离保护的研究与应用

Analysis to Compensated Stable Control Engineering of 500 kV Long Power Transmission Line

500kV长距离输电线路串补稳控分析

Economical for long distances.

远距离输电的经济性。

Research on Distance Protection of Transmission Lines with Series Compensation Capacitor;

具有串补电容输电线路距离保护的研究

a telephone line for long-distance calls.

远距离通话的电话线。

long-distance ship-shore radio communications

岸船远距离无线电通信

Study of Distance Protection Scheme of Transmission Line Based on Neural Network and DSP;

基于神经网络和DSP的输电线路距离保护研究

Researches and Design on Distance Relay Protection of Transmission Line Based on RBFN

基于RBFN的输电线路距离保护研究与实现

Study on Transposition of UHV Long Distance Transmission Line

特高压长距离输电线路换位问题的研究

Prospect of High Voltage Long Distance Compressed-air Insulated Transmission Lines

高压长距离压缩空气绝缘输电线路的发展前景

Research on Clearance to Ground and other Crossed Facilities of DC Transmission Lines at ±800 kV Voltage Level

±800kV级直流输电线路对地距离及交叉跨越研究

Equivalent-conversion Method to Modify Fault Location Distance of Transmission Line

输电线路故障定位距离修正的等效折算法

Study on fault transient component of EHV long distance transmission lines

超高压长距离输电线路故障暂态分量的研究

The feeders that served the more distant parts of an area had to go a long way before they picked up any load.

.向较远地区供电的馈电线在带负荷前需经过较长的输电距离。

the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission.

电离层的最高层，距地球表面至英里，有高度密集的自由电子，对远距离无线电传输非常有用。