基于MATLAB的电力系统暂态稳定仿真与分析  

Simulation and Analysis of Power System Transient Stability Based on MATLAB

作　　者：何芳 HE Fang(School of Electrical Engineering,Binzhou University,Binzhou 256603,China)

机构地区：[1]滨州学院电气工程学院,山东滨州256603

出　　处：《滨州学院学报》2022年第2期86-90,共5页Journal of Binzhou University

基　　金：滨州学院校级教研教改项目(BYJYYB202130)。

摘　　要：分析了瞬时性故障时自动重合闸合闸时间和暂态稳定极限切除角的关系,以及永久性故障时自动重合闸最佳合闸时间的确定方法,并利用MATLAB对单机无穷大系统和某多机系统进行了暂态稳定的仿真。仿真结果表明自动重合闸能有效提高电力系统瞬时性故障时的暂态稳定性。当系统发生永久性故障时,其最佳重合闸时间为系统的功角达到最大并开始减小,角速度为负并逐渐增大到最大值之前。This paper analyzes the relationship between the closing time of automatic reclosing and the transient stability limit cutting angle in case of instantaneous fault,and the determination method of the optimal reclosing time of automatic reclosing in case of permanent fault.The transient stability of a single-machine infinite bus system and a multi-machine system is simulated by MATLAB.The simulation results show that automatic reclosing can effectively improve the transient stability of power system in case of transient fault.When a permanent fault occurs in the system,the optimal coincidence time is that the power angle of the system reaches the maximum and begins to decrease,and the angular velocity is negative and gradually increases before the maximum value.

关 键 词：自动重合闸 极限切除角 最佳重合闸时间 暂态稳定 

分 类 号：TM743[电气工程—电力系统及自动化]