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首页> 外文期刊>Energy and Power >Numerical Simulations for Transient Stability Analysis of Two-Machine Power System Considering Three-Phase Fault under Different Fault Clearing Times and Locations
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Numerical Simulations for Transient Stability Analysis of Two-Machine Power System Considering Three-Phase Fault under Different Fault Clearing Times and Locations

机译：不同故障清除时间和位置的考虑三相故障的两机电力系统暂态稳定性的数值模拟

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摘要

This paper presents and investigates a new method for analyzing transient stability of a faulted two-machine system by using the numerical simulations in time domain which are executed using MATLAB software package in building the code and by choosing the fault locations and the clearing times. The transient stability analysis of two machine power system subjected to symmetrical three phase to ground fault are conducted at different locations (at line 4-5 near bus 4, at line 4-5 near bus 5 and at the midpoint of the line 3-4) with different clearing times (1, 5, 20, and 100) msec. The transient stability is investigated by solving the nonlinear dynamical second order differential swing equations for the two machines for pre-fault, during-fault and post-fault running periods and new operating points for two machines after clearing the fault are extracted. The fault has been cleared by simultaneously opening the circuit breaker of the faulted line at different clearing times. The rotor angle swing curve for each generator has been presented at different fault conditions. The power system under study consists of 5-bus, with two synchronous generators and two loads.
机译：本文提出并研究了一种新的方法来分析故障的两机系统的暂态稳定性，方法是使用时域的数值模拟，该模拟使用MATLAB软件包在构建代码时执行，并选择故障位置和清除时间。在不同位置（在靠近母线4的4-5线，在靠近母线5的4-5线和在3-4号线的中点）在不同位置进行两机接地对称对称的电力系统的暂态稳定性分析）具有不同的清除时间（1、5、20和100）毫秒。通过求解两台机器在故障前，故障期间和故障后的运行周期的非线性动力学二阶微分摆动方程，研究了暂态稳定性，并提取了清除故障后两台机器的新工作点。通过在不同的清除时间同时断开故障线路的断路器，可以清除故障。每个发电机的转子角摆动曲线已在不同的故障条件下给出。所研究的电源系统由5总线组成，具有两个同步发电机和两个负载。

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