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fault direction
相关语句
  故障方向
     The Experiment Instrument for Microcomputer Protection and a Simple Method of Judging the Fault Direction
     微机保护实验装置及判别故障方向的简单方法
短句来源
     Considering the existing main problems of the directional protection of high voltage and ultral high voltage transmission lines, a new method for determining the fault direction based on the R-L model is proposed in this paper.
     本文针对高压及超高压输电线路方向保护所存在的主要问题,提出了一种新的基于R-L模型的故障方向鉴别法。
短句来源
     The positive-sequence fault components based directional relay is a new type of unit for recognizing fault direction.
     基于正序故障分量的方向继电器是一种新型故障方向判别元件。
短句来源
     When power system runs normally,and when positive directional fault and inverse directional fault of various fault types occur in power system,the characteristic of the signal of the bus is very different. According to this information,this paper poposed the model and algorithm of the fuzzy neural network to be used to identify the fault direction.
     根据电力系统正常运行 ,发生各种类型正方向故障和反方向故障时 ,母线处获得的信号的特点 ,提出了用模糊神经网络来识别电力系统故障方向的模型和算法。
短句来源
     The simple method of judging the fault direction is accept-ed,which has characters of simplifying program and accurate judgement.
     并采用了判别故障方向的简单方法,具有简化编程和判断准确等特点。
短句来源
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  断层方向
     furthermore, fault direction also has certain effects on the characteristics of horizontal component of ground motion acceleration.
     此外,断层方向对地震动水平特性也有一定的影响。
短句来源
     In addition,the non-uniform subsidence in vertical direction is detected on roof strata,and the roof strata especially the lower strata are oblique to the fault direction.
     在垂直方向上,顶板离层出现不均匀沉降,顶板岩层特别是顶板下位岩层向断层方向倾斜.
短句来源
  故障向量
     Fault direction space method for fault detection and diagnosis in HVAC systems
     暖通空调系统故障诊断的故障向量空间法
短句来源
     To detect and diagnose the faults in heating, ventilation and air conditioning (HVAC) systems effectively and operate the system safely and efficiently, a new method for fault detection and diagnosis (FDD) in HVAC systems, named fault direction space method (FDSM), was presented.
     为了能有效诊断暖通空调系统(HVAC)中可能出现的故障,保证暖通空调系统安全、节能地运行,提出了一种应用于暖通空调系统故障诊断的新方法——故障向量空间法(FDSM)。
短句来源
  “fault direction”译为未确定词的双语例句
     The Ms6.1 Mangya earthquake on 14th January 1990 is locted at a convergence of gravity anomaly zones, which rupture propagation direction corresponds with fault direction.
     1990年1月14日茫崖Ms6.1地震发生于重力异常带的交汇处,破裂扩展方面与断层走向一致;
短句来源
     It is widely known that fault direction can be determined accurately by power directional relay when non-fault phase voltage is introduced to eliminate blind area with 90° connection.
     为了减小方向继电器死区,引入非故障相电压来判别故障电流的相位(即90°接线方式)。
短句来源
     A novel directional protection principle based on R-L model parameter identification is proposed,where the system resistance and inductance are sought out,then the symbolism of system resistance and inductance in interior and exterior faults is investigated to determine the fault direction.
     论述了基于R-L模型的参数识别方向保护原理,即通过求取系统参数R和L,利用内部和外部故障时系统参数R和L的符号关系来判断出故障的方向.
短句来源
     Firstly, data is projected onto principal component sub space and residual sub space respectively, then fault direction vector is defined.
     首先将数据分别投影于主元子空间和残差子空间 ,然后定义故障的方向向量 ;
短句来源
     Firstly, data is projected onto principal component sub-space and residual sub-space respectively, then fault direction vector is defined.
     首先将数据分别投影于主元子空间和残差子空间,然后定义故障的方向向量;
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  fault direction
Our network shows a smallseismic activity, with the epicenters well alignedalong the fault direction.
      
The fault direction could be positive or negative for faults that contain ramps or steps.
      
The fault direction and magnitude were also randomly selected for each period of operation.
      
The direction of the earthquakes in the last period is just barely closer to the fault direction than in the earlier periods.
      
This comes close to a busbar protection based on fault direction.
      
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In this paper the authors derive three algebraic equations, equations(3), (5) & (6), which work on the measurement of initial impedance, modification of the phase-angle and iteration of the impedance respectively. Thus, this newly developed fault locating algorithm provides higher accuracy and high speed for the microcomputer based distance relay. Obviously, it is immune from fault resistance and power flows.Accompanying the locating algorithm, a new discriminant of the fault direction is also presented...

In this paper the authors derive three algebraic equations, equations(3), (5) & (6), which work on the measurement of initial impedance, modification of the phase-angle and iteration of the impedance respectively. Thus, this newly developed fault locating algorithm provides higher accuracy and high speed for the microcomputer based distance relay. Obviously, it is immune from fault resistance and power flows.Accompanying the locating algorithm, a new discriminant of the fault direction is also presented (equation(7)), which is carried out during the calculation of equation(3). It cannot cause the relay losing of direction.A prototype of microcomputer based distance relay had been made. A series of strict experiments included digital simulation and dynamic power system model test was carried out. The test results are shown in Table 1, 2 & 3, perfectly match theoretical analysis and demands.

本文提出了一个能够快速精确地测量故障线路方向阻抗的新原理和方程式。基于此原理的微机保护可不受负荷电流和各种故障电阻的影响。并为数模和动模的大量试验考核所证实。

This paper analyzes the characteritics of fault transient travelling waves on a single phase transmission line. Then the characteristics of travelling waves propagation on the three-phase transmission line are studied using the method of modal analysis. A new distance protection scheme is presented. First the fault type and phases are recognized and a backward travelling wave singnal is combined. Then the fault direction and distance are determined by recognizing the characteristics of combined singnal....

This paper analyzes the characteritics of fault transient travelling waves on a single phase transmission line. Then the characteristics of travelling waves propagation on the three-phase transmission line are studied using the method of modal analysis. A new distance protection scheme is presented. First the fault type and phases are recognized and a backward travelling wave singnal is combined. Then the fault direction and distance are determined by recognizing the characteristics of combined singnal. The proposed algorithm has been tested by numerical simulation using a electromagnetic transient program of a typical 500kV system based on improved Bergeron method. The experiment of a single phase relay protype was made, which proved the correction of proposed algorithm.

本文对输电线路故障行波特征进行了分析,提出了行波特征鉴别式距离保护的方案,并进行了计算机仿真分析和单相模型继电器的模拟试验。该方案具有超高速动作、功能完善、保护区较稳定和抗干扰能力较强等优点。

Considering the existing main problems of the directional protection of high voltage and ultral high voltage transmission lines, a new method for determining the fault direction based on the R-L model is proposed in this paper. It has been pointed out that the microcomputer based directional protection using the proposed method has the properties of fast and reliable operation, and is easily realized.

本文针对高压及超高压输电线路方向保护所存在的主要问题,提出了一种新的基于R-L模型的故障方向鉴别法。分析表明,用这种方法构成的微机方向保护具有全线速动、可靠的特点,并且易于实现。

 
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