基于MATLAB的汽轮发电机组次同步谐振数字仿真  

Digital Simulation of Subsynchronous Resonance for Steam Turbine Generating Sets Based on MATLAB

作　　者：王彦美 张爱兰[2] WANG Yanmei;ZHANG Ailan(Guangdong Power Grid Co.,Ltd.,Zhanjiang Power Supply Bureau,Zhanjiang 524000,China;State Grid Jinan Power Supply Company,Jinan 250012,China)

机构地区：[1]广东电网有限责任公司湛江供电局,广东湛江524000 [2]国网济南供电公司,山东济南250012

出　　处：《国网技术学院学报》2019年第3期5-9,共5页Journal of State Grid Technology College

摘　　要：为解决因实际条件限制难以进行真机试验的困难,从而采用数字仿真的方法分析了汽轮发电机组次同步谐振问题。首先在对发电机组轴系机械系统与电气系统分析的基础上,建立了汽轮发电机并网系统的线性化数学模型,并采用隐式梯形积分法来表示数字仿真模型,利用MATLAB语言编写了仿真计算程序。最后通过算例,对电力系统发生次同步谐振的过程进行了仿真并验证了运行方式的改变可以抑制次同步谐振的发生。In order to solve the difficulty of real generator test due to the limitation of actual conditions,the subsynchronous resonance problem of Steam turbine generating set is analyzed and studied by means of digital simulation.On the basis of the analysis of mechanical system and electrical system of generator shafting,the linearized mathematical model of steam turbine generating sets grid-connected system is established,the digital simulation model is represented by implicit trapezoidal integral method,and the simulation program is programmed by MATLAB.Finally,the process of subsynchronous resonance in power system is simulated by an example,and the change of operation mode can restrain the occurrence of subsynchronous resonance is verified.

关 键 词：数字仿真 汽轮发电机组 次同步谐振 MATLAB 

分 类 号：TM712[电气工程—电力系统及自动化]