单机无穷大电力系统静态稳定性分析  

Static stability analysis of single machine infinite bus power system

作　　者：陈凯 CHEN Kai(Ningxia Tiandi Benniu Industry Group Co. ,Ltd. ,Yinchuan 750000,China)

机构地区：[1]宁夏天地奔牛实业集团有限公司,宁夏银川750000

出　　处：《陕西煤炭》2022年第1期100-103,112,共5页Shaanxi Coal

摘　　要：煤矿电力系统几乎随时都会受到小干扰的威胁,进行静态稳定分析具有重要意义。基于MATLAB的电力系统静态稳定分析与仿真以小干扰分析为主,通过拟定一个单机无穷大系统,结合实际设定相关电气设备的运行参数并进行网络参数的计算和稳定性分析。然后在MATLAB软件的SIMLINK库绘制所拟系统的仿真电路图,设置各模块的各项参数,选择合适的仿真参数,得出仿真结果。通过对仿真结果的分析,发现在MATLAB软件上的仿真结果与理论计算和分析的结果一致,即当单机无穷大系统陷入自发振荡使系统处在即将失稳状态时,合理提高发电机励磁电压可以改变现状,串联电容补偿可以调压,附加PSS装置可以有效抑制自发振荡。Because the coal mine power system will be threatened by small interference almost at any time,the static stability analysis is of great significance.The static stability analysis and simulation of power system based on MATLAB mainly focuses on small interference analysis.By assuming a single machine infinite bus system and setting the operation parameters of relevant electrical equipment in combination with the actual situation,the network parameter calculation and stability analysis are carried out.Then the simulation circuit diagram of the system is drawn in the SIMLINK Library of MATLAB software,the parameters of each module are set,the appropriate simulation parameters are selected,and the simulation results are obtained.The analysis of the simulation results shows that the simulation results of MATLAB software are consistent with the results of theoretical calculation and analysis,that is,when the single machine infinite bus system falls into spontaneous oscillation and the system is about to lose stability,reasonably increasing the generator excitation voltage can change the current situation,the series capacitor compensation can adjust the voltage,and the additional PSS device can effectively suppress the spontaneous oscillation.

关 键 词：单机无穷大电力系统 静态稳定性 小干扰分析法 串联电容补偿 

分 类 号：TM712[电气工程—电力系统及自动化]