无功的

ABSTRACT The infeasibility problem in voltage/reactive power optimization is analyzed in this paper, and this problem is handled with fuzzy constraints to obtain a solution as close as possible to the original space.

分析了电力系统电压无功实时优化控制中出现的不可行问题，通过引入模糊约束，从一个新的角度对不可行问题进行了处理，最终获得尽量靠近原不等式约束空间的解。

On the basis, this paper provide two harmonic current detect methods, and do deep research on the using zero current divided method to achieve harmonic current and instantaneous reactive current real time detecting method.

在此基础上，提出了两种基于该理论的谐波电流检测方法，并对采用零线电流分离法实现的谐波电流及瞬时无功电流的实时检测方法进行了深入研究。

The results indicate that it is feasible to test real time harmonic current using the method based on instantaneous reactive power theory.

结果表明，利用基于瞬时无功功率理论的方法实时检测弧焊电源的谐波电流是可行的。

Next regarding estimating system load margin, although the minimum singular value of the power flow Jacobin takes on linearly compared to the load increasing in general, it is influenced by the change of PV nodes.

其次对于用最小奇异值指标评估系统的稳定裕度，虽然它随负荷功率增长基本是呈现线性的，但是同时也受到了PV节点的无功越限影响。

Depending on the required reactive optimal control ask for power flow, this inquiry method is used in alternate iterating algorithm to calculate flow. By this method, there is not special need to deal numbering nodes of line, and there is not effect to program if add or reduce number of nodes.

针对配电网无功优化控制对潮流计算的要求，将上述这种节点链表查询法运用到交替迭代潮流计算方法中来，这种经过节点链表查询的潮流计算方法不需要进行特殊的线路编号，而且任意增减节点数对程序没有影响。

With development of power electronic technology, power converters have been used widely in switching power supply, motor-driven an...

随着电力电子技术的发展，功率变换器在开关电源、电机驱动控制、电网的无功补偿和谐波治理等领域得到广泛的应用。

With development of power electronic technology, power converters have been used widely in switching power supply, motor-driven and controlled, compensate of transmission-line system of electric power and harmonious wave manage.

随着电力电子技术的发展，功率变换器在开关电源、电机驱动控制、电网的无功补偿和谐波治理等领域得到广泛的应用。

This paper carries through deepgoing systemic analysis about reactive power compensationtechnology, main circuit of SVG simulation system, hardware circuit of control system, software isdesigned and laboratory simulation system is made.

本文对现有无功补偿方式进行了系统深入的分析，完成了SVG的模拟系统主电路设计，控制系统的硬件电路和软件设计，并制作了实验室模拟系统。

Compared with the traditional shunt APFs, there is no need to sense load current, noneed to calculate the harmonic and reactive component of the load current, and noneed for multiplier.

与传统APF相比，采用单周控制方法的APF的突出优点是：不需要检测负载电流，不需分离出负载电流中的谐波和无功分量，因此省略了高精度乘法器，控制电路简单。

Currently, there are various projects for comprehensive compensation of reactive power, harmonic component and negative sequence in the traction substation of electrified railway.

目前，我国牵引变电所无功功率、谐波和负序的综合治理已有多种方案，本文结合国内重载电气化铁道朔黄线的负荷情况，通过分析多种综合补偿方案，并加以比选，得出适合朔黄线的牵引供电综合补偿方案。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。