电磁暂态分析,electromagnetic transient analysis
1)electromagnetic transient analysis电磁暂态分析
英文短句/例句
1.ELECTROMAGNETIC TRANSIENT ANALYSIS OF MULTI STEP OVERVOLTAGE PROTECTION CIRCUIT FOR AC MAINS电源多级过电压保护的电磁暂态分析
2.A Novel Electro-Magnetic Transient Analysis Method for Distributed Parameter Transmission Lines分布式参数输电线路电磁暂态分析新方法(英文)
3.Analysis of Complex Electromagnetic Transient Leading to the Mal-operation of Power Transformer Differential Protection变压器差动保护误动原因的复杂电磁暂态分析
4.Analysis of Electromagnetic Transients of Three-phase Transformer"s Non-synchronous Closing and Its Influence on Protection三相不同期合闸下变压器电磁暂态分析及对保护的影响
5.Electromagnetic Transient Simulation and Test and Analysis of Wu Hai Electric Network Based on DDRTS (Digital Dynamic Real-Time Simulator);基于DDRTS的乌海电网电磁暂态仿真测试与分析
6.Analysis and Evaluation of the Methods of Electromagnetic Transient Computation on EHV Long Distance Transmission Line超高压远距离输电线路电磁暂态计算方法的分析与评价
7.Power System Transient Stability Analysis Considering Excitation Control Based on Direct Method;基于直接法的考虑励磁控制的电力系统暂态稳定分析的研究
8.The Analysis of the Transient Stability of the One-machine Infinite Bus Power System with Excitation Using VLSI;使用VLSI对计及励磁的单机无穷大电力系统暂态稳定进行仿真分析
9.Analysis and Countermeasure of Abnormal Operation Behaviors of the Transformer Differential Protection during Complex Electromagnetic Transient Courses复杂电磁暂态下变压器差动保护异常动作行为分析及对策研究
10.Analysis on Over-voltage and Transient Current of Feng-wu Line in Xinjiang新疆凤乌线过电压及暂态电流的分析
11.Electromechanical-Electromagnetic Transient Digital Hybrid Simulation in Power System电力系统机电暂态和电磁暂态数字混合仿真
12.Fractal entropy analysis of overlapped transient power quality disturbance叠加暂态电能质量扰动的分形熵分析
13.Improvement of signal to noise ratio in magnetic inductance tomography(MIT)by exploiting transient process analysis一种利用暂态响应分析提高电磁层析成像测量信号信噪比的新方法
14.Search for Teaching of Transient State Analysis of First-order Linear Circuit;“一阶线性电路暂态分析”教学探讨
15.Wavelet Transform Transient Powerquality Analysis and DSP Implementation小波变换暂态电能质量分析及DSP实现
16.An analysis of the time constant of transient process in the RC series circuitRC串联电路暂态过程时间常数的分析
17.An Analysis on the Dynamic Solution of the Series of Capacitor′sVoltages by Means of Complex Freguency Field Analysis Method;复频域分析法分析串联电容电压的暂态解
18.Research on Transient Characteristics of Power System Connected Distributed Generation;接入分散电源的电力系统暂态特性分析
相关短句/例句
electro-magnetic transient analysis program电磁暂态分析程序
1.PSCAD/EMTDC (electro-magnetic transient in DC system), anelectro-magnetic transient analysis program, is widely used in power system analysis, and MATLAB (mathematical modeling package) is the most popular numeric calculation software.电磁暂态分析程序PSCAD/EMTDC已经广泛应用于电力系统分析当中,而MATLAB语言是目前应用最广泛的数值计算软件,PSCAD/EMTDC程序与MATLAB语言接口能综合它们的优点。
3)electro magnetic transient program(EMTP)电磁暂态分析软件
4)electro-magnetic transient aanalysis method电磁暂态分析方法
5)the electromechanical transient analysis机电暂态分析
6)electromagnetic transient电磁暂态
1.A newelectromagnetic transient simulation approach accounting for impulsive corona and frequency-dependence line parameters;一种考虑冲击电晕及线路参数频变的电磁暂态仿真方法
2.To realize accurate testing of the control and protection systems,the transients in a high power electronic system are classified aselectromagnetic transients,switching transients,and electro-thermal transients.为实现大功率电力电子装置特性的全面物理测试,将装置的动态过程划分为装置级电磁暂态过程、器件级开关暂态过程和热动态过程,并对这3个动态过程进行实时交互计算。
3.The dynamic phasor model is based on the time-varying phasor, which not only breaks the quasi-stationary assumption, but also overcomes the maximum step size constraint of regular transmission line, so it can be used to analyze the fastelectromagnetic transient phenomena at a higher speed.传统的机电暂态模型由于建立在"准稳态"假设基础之上,因此不能用来仿真变化迅速的电磁暂态过程,而电磁暂态模型,虽然能准确反映电磁暂态过程,但由于仿真步长很小,仿真速度受到限制,不适合用来仿真大型电力系统。
延伸阅读
电磁暂态过程计算电磁暂态过程计算electromagnetic transient calculationd一onCI 20}飞to{g日OCher、91{s七Jorl电磁暂态过程计算(eleetromagnetiC transientcalculation)用数值计算方法对电力系统中从微秒至数秒之间的电磁暂态和准稳态过程所进行的计算.它包括:①由系统外部引起的暂态过程如雷电过电压等;②由故障及操作引起的暂态，如操作过电压、工频过电压等;③谐振暂态.如次同步谐振、铁磁谐振等;④控制暂态，如一次与二次系统的相互作用等;⑤电力电子装置及灵活交流输电系统(fl exibleAC transmission system，FACTS)、高压直流输电(highvoltage direet eurrent，HVDC)中的快速暂态和非正弦的准稳态过程等各种电磁暂态过程的数字仿真。它为电力系统的安全运行，设备的绝缘设计.保护装置的配置及参数选择，谐波分析及治理，电力电子装置、FACTS、HVDC系统主电路设计和设备自身的控制策略设计等提供重要的手段。电磁暂态过程计算的数学模型电力系统的电磁暂态过程受输电线路分布参数特性和参数的频率特性、发电机的电磁和机电暂态过程以及一系列元件(避雷器、变压器、电抗器等)非线性特性的影响。借助于计算机程序，用数值计算方法求解电磁暂态过程，必须建立这些元件和系统的代数或微分、偏微分方程.即计-算所用的数学模型。输电线路模型单根无损线的波动方程为式(1)和式(2)、，矛、，少1.19﹄了.、r、萨ul护u七2 aZ决2挤11护;众TZ az瀚2式中。为波速，。一l/丫万…瓦;乙和C，为单位长度导线的电感和电容;二为任一点与始端间的距离。这一方程式的解为式(3)和式(4) i=F(二一at)一f(二+ar)(3)u一ZF(二一at)+Zf(二十aI)(4)F和f是根据边界条件和初值条件决定的任意函数，波阻抗z一沂)沥瓦。F(二一“，)为前行波二f(:+at)为反行波。由式(3)和式(4)可以得到前行特征方程(5)和反行特征方程(6) “+Z;一ZZF(了一at)(5):‘一21=ZZF(了+at)(6)对于前行波来说，如果(x一at)不变，“+zi就不变。设想一观察者沿x方向以波速a与行波一起前进，由于(x一at)是常数，他所看到沿线任一点的“+Zi也是常数.这样，行波在(t一:)时刻从线路k端出发时粉到的u.(t一r)十Z汤(t一r)等于r时刻以后到达线路m端时着到的‘(t)十Z〔一如(t)〕.r为行波从掩到m的传播时间.由此得到式中R:为电感L的等值计算电阻，R‘=ZL/山，I乙为等值电流像，几(‘一。)一‘(‘一、)+誉〔u.(‘一。)丫巨’。
