无功的

The control of voltage and reactive power are inseparable.

电压控制和无功功率的控制是分不开的。

Theoretically and practically, the study of reactive power optimization in power system is of great significance.

因此，对电力系统无功优化问题的研究，不仅具有理论意义，对电力系统的实际运行也有重要意义。

Reactive compensation variety of ways, the most common is the shunt capacitor compensation.

无功补偿的方法多种多样，最常见的就是并联电容器补偿。

Six schemes of reactive power compensation and harmonic suppression are analyzed, based on which ,the cascaded thyristor -switching capacitor compensation with step-down transformer is adopted.

分析了我国牵引变在无功补偿和谐波治理上采用的6种方案后，采用带降压变压器的晶闸管投切电容器方案。

The controller used in SVC based on DSP is mainly studied in this paper.

本文主要研究了基于数字信号处理器的静止无功补偿装置的控制器。

After groundwork of deep analysis of theory of symmetrical components the digital compensating algorithm used in SVC is reduced.

在深入分析了对称化补偿原理的基础上，推导出用于SVC的数字化无功补偿算式。

Study the control policy of Automatic Control of Vol/Var of Power System which considers transformer economic operation.

研究了考虑变压器经济运行的电网电压无功控制系统的控制策略 4。

What's more, when the transformers in ringed networks are not matching, it will cause the ringed network a loop potential, then the circulating power is existed which also produce wattless circumfluence.

造成无功环流的原因各不相同，有的源于规划，有的是由于管理体制，有的由于运行方式，有的只是环网中各变压器的变比不匹配引起环网中存在环路电势，进而引起循环功率。

The author did the tracking test to four kinds of exist using energy-saving motors of sucker rod pumps,compared and analysed the tested data on the wattless losses,wattful power,single consume to output of fluid,energy-saving rate and average system efficiency of pump units.

跟踪测试了孤东油田目前在用的4种有杆抽油机节能电机，利用科学、准确的实测数据，从无功损耗、有功功率和产液量单耗、节电率、抽油机平均系统效率等方面进行了对比分析。

This paper advances the idea of measuring power of three-phase load,by using one Wattmeter,and draws circuit.

系统研究、总结了通过使用一只瓦特表测量得出三相负载的总有功功率和无功功率的思路，并给出接线电路图。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。