因此已无能力输送有功电流，除非安装非常昂贵和庞大的补偿设备。
Therefore, no capability is left for useful current to BE transmitted, unless very expensive and bulky compensation equipment is installed.
为了使得并网变流器具有动态无功、有功功率的平滑调节能力，选用了有功电流、无功电流解耦的电流闭环控制结构。
In order to make grid inverter adjust active and reactive power smoothly, a closed-loop with decoupled active and reactive current is implemented.
论述了利用瞬时无功功率理论从三相不对称电流中正确检测出三相正序有功电流，并用计算出的指令电流对系统进行补偿的原理。
Based on the instantaneous reactive power theory the method correctly detects the active positive-ord current from unsymmetrical currents and applies calculated command current to compensate system.
以通用瞬时无功功率理论为基础，阐述了电压不对称和非正弦条件时的有功和无功电流的物理意义。
The interpretation of active and reactive currents in non-sinusoidal and unbalanced three-phase four-wire systems is given based on the generalized instantaneous reactive power theory.
结合自动补偿电网的特征，对利用零序电流的附加有功分量进行单相接地故障选线进行了研究与分析。
The paper made research and analysis on the topic of faulted line selecting in an auto compensated distribution network in use of the active part of residual currents.
电力系统中网络结点千百个交织密布，有功潮流、无功潮流、高次谐波、负序电流等以光速在全系统范围传播。
Power system Network Node thousands of mixed clouds, active power, reactive power flow, high harmonics, negative sequence current of the speed of light in the system-wide communication.
该方法以电网电压为同步信号，在电网电压信号的过零点采样直流侧电容电压，并通过周期离散控制可以获得负荷电流有功分量。
The new control way can realize linear control for DC-bus voltage and get the fundamental component of the load current synchronously with a little of calculation.
对于牵引网的单相性以及实现两臂负荷有功功率的流通，采用了改进型的单相补偿电流检测方法；
For the simple-phase feature of traction grid and the active power circulating between the two arms, an improved method of simple-phase compensating current detecting is used.
有功和无功电流补偿或线路压降补偿。
This function is sometimes called active and reactive current compensation or line drop compensation.
调谐型相间功率控制器(IPC)是一种串联型控制装置，其突出特点是具有很强的线路有功输送功率控制能力和短路电流限制能力。
The tuned Interphase power controller (IPC) is a series connected power controller which has outstanding ability to control active power in transmission line and to limit the short circuit current.
同时，内环采用电流前馈解耦方式，分别独立控制有功功率、无功功率。
The inner loop adopts the current feed-forward decoupled mode to control the active power and reactive power independently.
矿井电力负荷综合传感器主要是测量矿井电力负荷的电流、电压、有功电度和无功电度四个参数。
The synthetic sensor for the mine power loads mainly measured the current, voltage, active-energy and reactive-energy.
电力系统中常需测量电压、电流、功率因数、有功功率、无功功率和视在功率等参数。
In an electric power system, the following parameters often need measuring: voltage, current, power factor, power, reactive power and apparent power.
提出了零序电流有功增量和零序电流幅值增量作为判据的故障点定位方法。
This paper also proposed a new fault locating method based on either the active component increment or the amplitude increment of zero-sequence current.
变压器的空载试验中，由于功率因数低，空载电流不是正弦信号，高精度测量其有功功率具有一定的难度。
In the no-load test of transformer, because of the low power factor and non-sinusoid current waveform, the high precision measurement is difficult.
本文提出了一种单相有源电力滤波器谐波和无功电流检测的新方法—负荷电流基波有功分量法。
This paper presents a novel detecting method for harmonics and reactive current in single-phase active power filter based on calculation of the real part of the fundamental load current.
结果表明该电路限定开关器件电压变化率和电流变化率的能力良好，具有功耗较低的优势。
The result shows that the circuit is powerful in limiting the voltage and the current change rates of the switch devices and has an advantage of less power consumption.
配电网合理的电容器配置不仅可以有效改善电网的电压水平，降低系统的有功网损，而且能够避免谐波谐振或电流放大。
The desirable scheme of capacitor placement in distribution systems aims at achieving voltage regulation and power loss reduction, while preventing harmonic resonance or magnification.
实验表明，作为双馈感应发电机转子励磁电源的三相pwm变换器具有功率因数高、网侧电流谐波小、能量双向流等优点。
Experimental results show that three-phase PWM converters are advantageous in high power factor, small input-line current harmonic distortion and bi-directional power flow.
这种新型电流比较仪实际上包含了自平衡直流比较仪和电子补偿式交流电流互感器的所有功能。
The improved AC/DC comparator consists of a self balancing DC comparator and an electronically compensated AC transformer.
以场致发射理论为基础的真空微电子器件，因其具有功耗低、电流密度大、频率高等诸多优点而倍受人们关注。
Vacuum micro-electronics devices, which are based on field emission theory, are more and more widely applied, because of their low power consumption, high current density and high frequency.
电流型四象限变流器是一种脉冲宽度调制的交直流变换装置，具有功率因数高、谐波电流小、再生方便等优点。
Currcnt-type four quadrant converter is an AC-DC converting device with pulse width modulation, whose advantages are high power factor, low harmonic current and convenient regeneration etc.
这些数字多用表可以实现你对一台数字表预期的所有功能，包括电压、电流和电阻。
These Numbers can be used to achieve all the functions you expect from a digital table, including voltage, current, and resistance.
具有功耗、起动电流、振动和体积小，结构简单，重量轻，便于携带和使用寿命长等特点。
The utility model ahs the advantages of low power consumption, small starting current, small vibration, small volume, simple structure, light weight, and convenience for carrying.
提出了一种具有功率因数校正、滤除谐波电流和抑制谐波谐振的电力系统综合补偿系统电路结构并将其成功应用于实际工程。
A circuit topology of a combined compensation system for power factor correction, harmonic mitigation and harmonic resonance damping is proposed.
提出了一种具有功率因数校正、滤除谐波电流和抑制谐波谐振的电力系统综合补偿系统电路结构并将其成功应用于实际工程。
A circuit topology of a combined compensation system for power factor correction, harmonic mitigation and harmonic resonance damping is proposed.
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