视在功率

一种计算三相不对称系统视在功率的新方法&BG法

A new method to calculate apparent power in unbalanced three phase system

功率因数是有功功率与视在功率之比。

The power factor ( pf ) is the ratio of average power to apparent power .

功率因数功率因数是电路中有功功率（W）视在功率（VA）间夹角的余弦值。

Power Factor Power factor is the cosine of the angle between the active power ( kW ) and apparent power ( kVA ) in a circuit .

无功及视在功率物理意义的剖析

Analysis of physical meaning of reactive power and apparent power

非正弦非平衡电力系统视在功率研究

On apparent power of unbalanced non-sinusoidal electric power system

动态电压恢复器的最小视在功率控制

Minimum Apparent Power Control of Dynamic Voltage Restorer

空载视在功率-电阻焊的扼流圈负载放大电路

No-load apparent power choke amplifier circuit

首先运用对称分量法将单相异步电动机分为正序系统和负序系统，然后分别用矩阵分析了这两个系统中各自的有功功率、无功功率和视在功率。

Using the method of symmetric components and matrix , this paper analyses instantaneous power and the operation parameters concerning one-phase asynchronous motor in dynamic state .

单相正弦电路或三相平衡正弦电路中，有功功率、无功功率、视在功率和功率因数的概念非常明确。

Definitions for active - , reactive - , apparent - power , and power factor are clear in the 1-phase or 3-phase balanced sinusoidal circuit .

本文提出的非正弦网络功率的分析方法是将视在功率分解成四个分量：有功功率、分散功率、无功功率、外加视在功率。

An analytic method of power in nonsinusoidal networks is suggested for the apparent power decomposition into four components , active power , scattered power , reactive power , and forced apparent power .

基于传统的功率三角形（即有功功率，无功功率，和视在功率三者的平方成直角三角形的关系），提出了功率四边形这种新的电工理论。

According to traditional power triangle ( the square of the active power , reactive power and apparent power form the relation of the right triangles ), put forward a new electrician 's theories of power quadrangle .

龙滩水电站水轮发电机单机视在功率达777.8MV.A，通过对各种冷却方式优缺点的分析比较，并结合龙滩水轮发电机的特点，最终选用空冷方式。

The installed capacity of a generator is 777.8MV · A , air cooling is finally determined through analysis and comparing the advantages and defects for a variety of cooling ways and combining the features of Longtan hydro-generator .

再者，论文提出了一种直接交交潮流控制器，并开发了针对该方案的最小视在功率潮流控制算法，实现了以小容量的变流器对电网潮流的大幅度控制。

Again , a direct AC-AC based power flow controller ( PFC ) is proposed in the power transmission system . A minimum apparent power transfer control strategy is developed for the converter to realize maximum power flow control range while using the minimum volume of the converter .

从线损与视在功率平方的关系证明了有效视在功率的科学性，根据有效视在功率的定义，通过功率三角关系得出了三相非正弦非平衡系统的非有功功率，即广义无功功率。

Presents the limitations of traditional definitions and the improvements of effective apparent power in the IEEE Trial-Use Standard according to the relation between line loss and apparent power , then defines the nonactive power of 3-phase non-sinusoidal unbalanced system , as can be also called generalized reactive power .

该终端可以采集三相电压、电流的有效值，三相电压、三相有功、无功、视在功率，频率，等各种电力参数，还可以同时采集8路模拟量。

The designed terminal Can collect too many electric parameters such as voltage RMS , current RMS , digital waveform of voltage and current , active power , reactive power , apparent power frequency and current temperature etc. It also has three pulse data channels , eight analog data channels .