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internal fault analysis     
相关语句
  内部故障分析
     AN INDUCTANCE CALCULATION MODEL OF POWER TRANSFORMER FOR INTERNAL FAULT ANALYSIS
     用于内部故障分析的变压器电感参数计算模型
短句来源
     Internal Fault Analysis of 330kV Capacitor Voltage Transformer in Guyuan Substation
     固原变330kV电容式电压互感器内部故障分析
短句来源
     A THEORETICAL BASIS FOR GENERATOR INTERNAL FAULT ANALYSIS SOFTWARE——MULTI-LOOP ANALYSIS METHOD
     发电机内部故障分析软件的理论基础——多回路分析法
短句来源
  内部故障
     AN INDUCTANCE CALCULATION MODEL OF POWER TRANSFORMER FOR INTERNAL FAULT ANALYSIS
     用于内部故障分析的变压器电感参数计算模型
短句来源
     Internal Fault Analysis of 330kV Capacitor Voltage Transformer in Guyuan Substation
     固原变330kV电容式电压互感器内部故障分析
短句来源
     A THEORETICAL BASIS FOR GENERATOR INTERNAL FAULT ANALYSIS SOFTWARE——MULTI-LOOP ANALYSIS METHOD
     发电机内部故障分析软件的理论基础——多回路分析法
短句来源
     PRACTICAL APPLICATION OF INTERNAL FAULT ANALYSIS SOFTWARE TO POWER GENERATORS
     发电机内部故障仿真分析软件的应用实例
短句来源
     FUNDAMENTALS OF INTERNAL FAULT ANALYSIS SOFTWARE FOR GENERATORS
     发电机内部故障仿真分析软件的基本原理
短句来源
  发电机故障分析
     Based on the multi loop method, the internal fault analysis software has been developed.
     以多回路法为理论基础开发的发电机故障分析软件也已面世。
短句来源
     Based on the multi-loop method, the internal fault analysis software has been developed.
     以多回路法为理论基础开发的发电机故障分析软件也已面世。
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For the purpose of precious internal faultanalysis and relay protection of the power transform er,some problem s in the existing m odels are pointed out.The key problem is that the difference of the leakage m agnetic field distribution between normal operation and fault condition has not been taken into account.Therefore,the original short circuit reactance or leakage inductance of the transformer can't be used to develop the model param eters of the faulty transformer.This paper presents a new method to...

For the purpose of precious internal faultanalysis and relay protection of the power transform er,some problem s in the existing m odels are pointed out.The key problem is that the difference of the leakage m agnetic field distribution between normal operation and fault condition has not been taken into account.Therefore,the original short circuit reactance or leakage inductance of the transformer can't be used to develop the model param eters of the faulty transformer.This paper presents a new method to determ ine the leakage inductance of a power transformer. Based on the principle of linear superposition of the leakage magnetic field,the leakage inductance of the faulty transform er is firstly calculated on the basis of the geom etric dim ensions of the windings by subdividing windings into several sections according to the fault location.Then, the obtained inductance m atrix will be m odified according to the conceptthat the sum of the am pere- turns of all harmonics in the transformer windings is equal to zero.The application of the proposed m ethod has shown that the method has the flexibility and sufficient precision in the internal fault analysis.

针对电力变压器内部故障分析和保护的需要 ,详细分析了现有模型中确定电抗参数或电感参数存在的问题 ,指出问题的关键是没有考虑到发生内部短路故障之后 ,变压器内部的漏磁场分布发生了变化 ,因而用变压器没有故障时的漏电抗或漏电感推算发生故障后的模型参数是不正确的。在此基础上 ,提出了一种满足磁势平衡关系并且适用于具有任意截面形状和大小的线圈的漏电感计算模型

The multi loop analysis method for ac machine is represented. The check of protection sensitivity and the design of main protection scheme for generators are based on the multi loop method. The digital simulation results and the experimental results of different types of synchronous generators have verified the multi loop mathematical model and the simulation program. The multi loop method has been successfully applied to the simulation of stator winding internal faults and the design of main protection...

The multi loop analysis method for ac machine is represented. The check of protection sensitivity and the design of main protection scheme for generators are based on the multi loop method. The digital simulation results and the experimental results of different types of synchronous generators have verified the multi loop mathematical model and the simulation program. The multi loop method has been successfully applied to the simulation of stator winding internal faults and the design of main protection schemes of more than ten power stations. Based on the multi loop method, the internal fault analysis software has been developed.

阐述了交流电机的多回路分析法 ,奠定了发电机内部短路保护计算的理论基础。多台各种类型同步发电机内部故障的仿真及其与试验的对比证明了多回路数学模型和方法的正确。多回路分析法已成功应用于国内 10多个电站发电机定子绕组内部故障计算和保护方案设计。以多回路法为理论基础开发的发电机故障分析软件也已面世。

The application of the multi-loop method for AC electrical machines to the analysis of internal fault of generators, on which the developed software of internal fault analysis of generators is based, is described in this paper. The characteristics, user interface and structure of the software are introduced. In the software, the effects of air gap harmonic fields, various connections of windings, and spatial position of coils are considered. This software is capable of analyzing various types of internal...

The application of the multi-loop method for AC electrical machines to the analysis of internal fault of generators, on which the developed software of internal fault analysis of generators is based, is described in this paper. The characteristics, user interface and structure of the software are introduced. In the software, the effects of air gap harmonic fields, various connections of windings, and spatial position of coils are considered. This software is capable of analyzing various types of internal and external faults, calculating all of the voltages and currents under different operating conditions, and combining the branch currents for the analysis of different protection schemes. This software, innovating the analysis of internal fault of generators and the design of main protection, is oriented to the design and setting of main protection scheme of large- and medium-capacity generators.

将交流电机的多回路分析法应用于发电机内部故障分析计算 ,编制了仿真计算软件 ,介绍了软件的特点、界面和结构。该软件考虑了气隙谐波磁场、绕组的各种连结方式、线圈空间位置的影响 ,可以用来分析交流电机各种形式的内部和外部故障 ,计算电机所有电压和电流等电气量 ,定子任意支路电流的组合用于各种保护方案的分析。该软件适合于大中型发电机主保护设计整定计算 ,是发电机内部故障分析方法与主保护设计的创新。

 
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