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directional unit
相关语句
  方向元件
     A study of the phase angle power directional unit
     交点相角法功率方向元件的研究
短句来源
     Turn-to-turn Faults in Stator Windings of Generator and Negative Power Directional Unit
     发电机匝间保护与负序功率方向元件
短句来源
     To prevent this maloperation,negative power directional unit can be used for judging the fault between internal and external,which is a way to prevent turn-to-turn faults protection maloperation.
     提出增加用负序功率方向元件来进行判断内外部故障,可以有效防止匝间保护误动作。
短句来源
  “directional unit”译为未确定词的双语例句
     DERIVATION OF DIMNESIONLESS EQUATIONS FROM METHOD OF ANALYSIS OF DIRECTIONAL UNIT SYSTEM
     有向单位系下的方程无量纲化法
短句来源
     Test System of Rocket Artillery Directional Unit′s Electrical Steering Characteristic
     火箭炮定向器电动操瞄性能检测系统研究
短句来源
     The disadvantages of transformers backup protection are analyzed detailedly, and a new scheme for transformer backup protection based on the directional unit applying fault components is presented in this paper.
     本文详细分析了现有的变压器后备保护的不足,提出了基于纵联比较原理的变压器后备保护新方案。
短句来源
  相似匹配句对
     A study of the phase angle power directional unit
     交点相角法功率方向元件的研究
短句来源
     DERIVATION OF DIMNESIONLESS EQUATIONS FROM METHOD OF ANALYSIS OF DIRECTIONAL UNIT SYSTEM
     有向单位系下的方程无量纲化法
短句来源
     Photosynthetic unit
     光合单位
短句来源
     Stroke Unit
     卒中单元
短句来源
     directional complement structure;
     趋向补语句式;
短句来源
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  directional unit
For modelling the directional unit, a phase comparator or power measurement technique can be chosen.
      


Some criteria analyses were made to investigate the effect of rotating,etc. On leakage flow and heat transfer in labyrinth seals.A series of analogous criteria for experimental simulation were driven from the method of directional unit system.The principle of directional unit system is suggested that the choice and treatment of the unite system in the similarity theory is quite different from those of public unit systems such as SI system or engineering unit system,even though all they...

Some criteria analyses were made to investigate the effect of rotating,etc. On leakage flow and heat transfer in labyrinth seals.A series of analogous criteria for experimental simulation were driven from the method of directional unit system.The principle of directional unit system is suggested that the choice and treatment of the unite system in the similarity theory is quite different from those of public unit systems such as SI system or engineering unit system,even though all they must conform to the Gauss's rule of unit system.For the former,the flexibility and the particularity is necessary,because in the similarity theory the particular and actually phenomenon is investigated,and for the directional unit system, the invariance and the universality is necessary,as it is based on possibility of occurrence of all phenomena.Those analogous criteria are proved to be reasonable and practicable by discussion.

应用方向性单位制的方程无量纲化方法,研究了旋转等因素对篦齿封严泄露流动、换热的影响,推导出可供实验模化用的相似准则.虽然方向性单位制和以往的SI或工程单位制均遵守Gaus准则,但它们选用和处理各单位各不相同,对于以往的单位制,由于相似理论研究的实际情况复杂,需要研究具有灵活性和特殊性;对于后者,基于所有现象能发生的可能性,研究则具有一般性和不变性.相关的讨论证明其合理性.

A nodal phase_angle power directional unit is presnted. The unit uses a phase angle between waveform of voltage and current as criterion.The dead zone is extremely small and its circuit structure is simple.Therefore,this new power directional unit is more better than traditional one.

介绍了一种新型的交点相角法功率方向元件 ,这种新型的功率方向元件是利用电流、电压相量的波形之间的交角作为动作判断量 ,其动作死区极小 ,且构成较为简单 ,因此比传统的功率方向元件更为优越

Directional unit based protection of double-circuit line is analyzed in detail. It uses the balance between two circuits to distinguish internal faults and external faults. Directional units of the two circuits are used as the criterion. The noncommunication protection will cooperate with zone 2 of distance protection. Influence of system impedance and fault types are put forward. EMTP simulation proves the correction of the principle and analysis.

为了在平行双回线上实现利用单端电气量的全线速动保护,提出了一种基于方向元件的双回线无通道保护新原理,它通过比较双回线同端两条线路上的方向元件的输出来判断远方断路器的动作情况,从而判断是否在区内发生了故障。该无通道保护可以快速、可靠地加速距离保护二段之内的区内故障动作。文中进行了故障分析和保护原理的讨论,并验证了该保护的可行性。

 
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