无功的

This paper presents a kind of voltage and reactive power control integral principle and concrete control strategy for 220KV three winding transformer step-down stations.

目前的控制策略一般使用九域图原理但其缺陷是容易产生分接头频繁调节。本文针对电网电压的枢纽站220KV三绕组降压变电站，提出了一种电压无功综合控制的总体原则和具体控制策略。

Its real power and reactive power consumption is the vector sum of active power, active energy meters record consumption of electricity less than the actual value.

其实际消耗是无功电能和有功电能的矢量之和，有功电表记录的数值小于实际消耗的电能。

In the end, it gives weakness in this SVC system and inquires into improvement according to practical apply property.

最后根据系统运行情况，分析了补偿装置功能的实现，提出了该类无功补偿装置的不足之处和改进提高的方法。

After more research, we found the main reason of this problem is the unbalance of reactive power in this kind of power system.

并且进一步分析得出，产生这种问题的主要原因是系统内的无功功率的不平衡。

The simulation results demonstrate that the stator flux oriented vector control strategy is feasible and practical. As a result a method is provided to realize independent controls of active and reactive power for ACEM concretely.

仿真结果验证了本文所提出的定子磁场定向矢量控制策略的正确性和实用性，从而为具体实现对交流励磁电机有功和无功功率的独立控制提供了一种方法。

This controller take Ameri- can TI Corporation's TMS320LF2407 the model DSP chip as the control core, touches through the relay throws cuts compensates the capacitor, the automa- tic tracking and the electric capacity which the realization idle work compensat -es automatically throws cuts.

该控制器以美国TI公司的TMS320LF2407 型号DSP芯片为控制核心，通过继电器触动投切补偿电容器，实现无功补偿的自动跟踪和电容的自动投切。

Therefore, it is great of impendency and...

因此，加快研究开发适合于我国电网实际情况的面向全网的在线电压/无功优化控制系统是十分迫切而且必要的。

In this paper, with domain analysis method for reactive power in nonsinusoidal, the formulas of apparent power and power factor both in nonsinusoidal and asymmetric conditions are describled.

本文从单相非正弦波形下无功功率的时域分析定义出发，导出三相不对称时视在功率的公式，从而获得非正弦波形又不对称下三相功率因数的计算公式。

Then, aiming at harmonic current problem of single-phase circuit, I predigest the triphase instantaneous harmonic and reactive power theory to be used in detecting harmonic current of single-phase circuit.

然后，针对单相电路中的谐波电流问题，对三相的瞬时无功功率理论进行简化，使其应用于单相的谐波电流检测当中。

By applying this approach, the reactive power sources can be allocated most reasonably,reactive compensatio n balances in every zone.

经过仿真计算比较，该方法可找到电力系统无功电源的最佳配置地点，并对提高电力系统的电压稳定性有很好的效果。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。