无功的

The working principle and structure of the reactive power compensator based on NIC are introduced.

阐述了一种基于负阻抗变换器NIC特性的新型无功补偿器的工作原理及电路结构，在此基础上提出一种通过NIC将电感转换为可连续调节的电容的方法。

With the quick development of social economy,the amount of using electricity is increasing quickly and complicatedly.

随着社会经济的高速发展，用电负荷的剧增，且用电负荷日趋复杂，值班员手动进行电压和无功调节的工作量大大增加，而且不能满足电压质量的要求。

Lost of 400 MW and 200 MVA reactive in critical region affect dramatically all the system.

在如此重要的地方失去了600MW 的无功功率对于整个系统的影响是致命的。

LC filter is an important part of this hybrid reactive power dynamic compensation. The parameters of capacitor and inductive winding of LC filter change during operation with the changing surrounding temperature, the self-heating and the insulation ageing of capacitor, etc. During the installation and commissioning, there may exist errors that can deviate the actual parameters and correspondent harmonic oscillation frequency from the designed value and result in filter disarrangement.

LC滤波器是动态无功补偿装置中的重要组成部分，由于它的电容器和电感线圈参数，在运行过程中会因周围温度的变化、自身发热和电容器绝缘老化等因素影响而发生变化，在安装和调试过程中会存在误差，从而使实际参数和相应的谐振频率偏离设计值，导致滤波器失谐，这就要求对滤波器进行优化设计。

On the base of the power MIS database in the oilfield,the database of distribution line loss is constructed.Long-distance reading is applied for calculating the equation power,and the equation square root method of current is applied for the distribution line loss calculation.

在胜利油田现有的电力管理信息系统数据库的基础上，建立配电网线损计算数据库，利用胜利油田配电网广泛采用的远程抄表技术来计量各负荷点的平均有功功率、无功功率，并应用均方根电流法计算配电网线损。

The main contents in this dissertation are as follows:According to the theory of asymmetry operation, this dissertation has a research on the principle of ASVGs main circuit, eliminating the fundamental negative, zero sequence and harmonic current so as to realize operation in stabilization.

本文的主要内容如下：根据电力系统不对称运行原理，本文研究静止无功发生器的主电路结构和减小或抑制基波负序零序和谐波电流的机理，以实现电力系统的稳定运行。

This paper proposes a model for reactive power optimization considering UPFC based on the interior point algorithm .

基于内点优化方法，提出了计及UPFC的无功优化模型，以系统网损最小为目标函数，采用UPFC电压源模型，将其作用等效为一系列电压和功率的约束，直接放到内点法的约束中，在不同的负荷运行方式下进行了优化分析。

Based on graphic technique of GIS, it forms the platform for electric power system software, so that the operation and organization of equipment can be more intuitionist, and the net analysis program of electric power system can be more automatic and precise; At the aspect of power loss calculation, we can get active power and reactive power loss separately, or get each kind of element's attribute, loss, and etc.

它以地理信息系统的图形化技术为基础，为电力系统软件架设图形化平台，使设备的操作、管理更加直观，使电力系统的网络拓扑分析程序更加准确和自动化；在线损计算方面，可以从计算结果中分别统计有功损耗和无功损耗，也可以方便的在配网图上对各种元件进行属性查询，损耗查询等。

Posing condiction in which the formula can be used is discussed. It is proved that it is only useful for zero-friction quasl-state process, non-quiet isometic or isobaric process.

本文较严格地导出了计算准静态过程功的公式，并讨论了该公式的适应条件，指出该公式只对无摩擦的准静态过程，以及等压或等容的非静态过程适用。

But the data acquisition and measurement is restricted by many kinds of conditions,which become an important obstructor on developing voltage and reactive power control system.

而这些数据的采集、测量目前受到各种条件的制约，还存在许多不足，成为阻碍电压/无功分析管理软件的研究发展的一个重要因素。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷