这是“无线输电”对未来的承诺,一种无需电线和插座就可在空气中传播电流到笔记本、iPods及其他电器的方式。
This is the future promised by "wireless power", a means of broadcasting electricity through the air to laptops, iPods and other gadgets without the need for cables and sockets.
该文提出了基于瞬时无功功率理论的四相输电谐波电流检测方法。
This paper presents four-phase transmission harmonic current detecting method based on instantaneous reactive power theory.
为降低大容量输电系统的短路电流水平,提出一种基于饱和电抗器的串联谐振式故障限流器。
With a view to reducing the short circuit current level of large capacity transmission systems, an in-series resonant type FCL based on saturated inductor is presented.
直流输电系统接地极电流对交流电网的影响分析。
Analysis on influence of ground electrode current in HVDC on AC power network.
由于并联电抗器两侧的电流发生变化,传统的行波差动保护无法应用于带并联电抗器的输电线路。
Because of the current on the shunt reactor, traditional traveling wave differential protection cannot be applied to transmission line with shunt reactor.
特高压长距离输电线路呈显著的分布参数特性,其电容电流很大。
UHV long transmission line is of its distinct characteristics of distributed parameters and large capacitive currents.
本文应用开关信号理论,建立了基于谱技术的传输电流开关理论。
By applying switch-signal theory, the theory of transmission current-switches based on spectral techniques is proposed.
为降低长输电线路的电流不平衡度,需要进行导线换位。
Conductor transposition is necessary to reduce unbalanced current in long transmission lines.
在直流输电线路工程设计中,如果按我国现行标准规定的经济电流密度选择导线截面,将导致截面偏小,损耗增大。
In DC transmission line construction design, current national standard of economical current density will under predictcd conductor section, resulting in large loss.
这里须滤去由电抗器相位控制引起的谐波电流以避免不能接受的输电母线电压畸变。
These may be required where harmonic currents caused by the thyristor phase control of the reactor current must be filtered to prevent unacceptable transmission bus voltage distortion.
提出了利用二次模变换计算同杆双回输电线路潜供电流与恢复电压稳态值的方法。
A new method for calculating secondary arc current and recovery voltage on double-circuit transmission lines by twice-model transformation was proposed.
为此,阐述了入地电流的概念,对输电线路架空避雷线、电缆线路及架空电缆混合供电线路的分流系数进行了探讨和计算。
This paper expatiates on the concept of earth short-circuit current, discussing and computing the shunt coefficient of overhead ground wires, cable lines and hybrid overhead cable lines.
因而用该算法可以非常容易地计算在高压远距离输电线短路故障的暂态短路电流。
With this algorithm the transient short circuit current of HV distant transmission line can be easily calculated.
高压输电线路发生故障后的暂态电压或电流分量中包含比工频分量更多的故障信息,充分利用这一信息是构成具有绝对选择性单端无通信保护的前提。
Moreover, it is the basis of constructing a new non communication protection through absolutely utilizing the fault information which is comprised in transient component of fault current or voltage.
对衡量直流输电线路电话干扰水平的等效干扰电流标准进行了系统的研究。
The equivalent disturbing current, which determines the harmonic interference noise in nearby telephone circuits, is studied systematically.
提出了一种适用于输电线路差动保护抗电流互感器(TA)饱和的新方法——电流极性比较法。
A new countermeasure to current transformer (TA) saturation, namely, current polarity comparison method, for differential current protection of transmission line is proposed.
在此基础上确定了溪洛渡—株洲特高压直流输电工程换流变压器的额定功率、电压、电流和分接头的变化范围等参数。
After illustrating the operation theory of six pulse converter, author gives the calculating method of UHVDC transmission parameters such as operating power, voltage, current and tap changer range.
本文研究提出了一种应用光纤通道的短距离输电线电流差动保护方案。
In this paper a current differential relaying system using fiber-oPtic signal transmission channel is described.
输电需要采用小电流和高电压,或者大电流和低电压。
We need a small current and a high voltage; or a large current with a low voltage.
本文针对高压输电线距离保护及故障测距中常用的解微分方程算法,提出了一种零序电流相位修正的方法。
The paper proposes a method which corrects the Angle of zero-sequence current in the algorithm of differential equation used for distance protection and fault location of HV transmission lines.
同时,使用E1速率来传输电流差动信息后,也使得保护信息传输带宽大大加宽,有利于保护功能的增强与完善。
It also can improve the bandwidth of transmission widely when using E1 rate to transmit current differential information. This can be used by the protection to enhance its performance.
基于高压输电线路的分布参数模型,使用线路两端电压、电流的正序和负序分量,对高压输电线路两点异相故障提出了一种新的测距算法。
Based on the distributed parameter model for transmission line, a new fault location method for short circuit fault of two points on different phases of the power transmission line is presented.
应注意到,直流输电系统并不会增加交流系统故障时的故障电流。 收藏。
It should be noted that the DC transmission system does not contribute to the fault current flowing in the AC system5 during the AC faults.
利用输电线路两端的故障电压、电流量,提出了一种基于输电线路等效序网的故障测距方法。
Using post fault voltages and currents from the two terminals, a novel method for fault location based on transmission line's equivalent sequence networks is proposed in this paper.
输电线路电流保护和电压保护分别作为电力系统保护原理和手段之一,是十分重要的保护类型。
Curren protection and voltage protection in transmission line as one method and principle of electric power system, they are very important protection.
提出了架空输电线路直流融冰的两个重要参数:最小融冰电流和最大允许融冰电流的概念。
Two Critical concepts involved in direct current ice-melting technique of high voltage over head line, the least ice-melting current and the Max allowed current was presented.
但是目前针对静止无功发生器的研究主要集中在输电系统无功补偿,且控制方法基于间接电流控制。
At the present time, the research on SVG is mainly focus on the reactive compensation of power transmission system, and the control method is based on indirect-current control.
当输电线网发生故障时,各相的电压、电流都会随之偏离正常工作状态。
When transmission lines are at fault, the voltage and current will change violently.
应用改进的电气几何模型分析了输电线路杆塔结构、避雷线和导线的布置、雷电流的幅值、地面倾角对绕击率的影响。
With such model the effect of tower structure, lightning current amplitude, angle of the lightning incidence, as well as the ground angle on the shielding failure rate are analyzed.
应用改进的电气几何模型分析了输电线路杆塔结构、避雷线和导线的布置、雷电流的幅值、地面倾角对绕击率的影响。
With such model the effect of tower structure, lightning current amplitude, angle of the lightning incidence, as well as the ground angle on the shielding failure rate are analyzed.
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