基于两机扩展Heffron-Phillips模型的励磁系统调差系数对系统阻尼特性的影响  

Research on Impact of Excitation System Adjustment Coefficient on System Damping Characteristics Based on Extended Two-Machine Heffron-Phillips Model

作　　者：李伟龙[1] 安军[1] 周毅博[1] 郭雷[2] 姜旭[2] 王春华[2] 桂建忠 

机构地区：[1]东北电力大学电气工程学院,吉林省吉林市132012 [2]吉林省电力有限公司调度通信中心,吉林省长春市130021

出　　处：《电网技术》2017年第1期222-229,共8页Power System Technology

摘　　要：励磁系统调差系数是励磁系统控制的重要参数,合理的参数整定有利于系统的安全稳定运行。首先推导了两机扩展Heffron-Phillips模型,并在此模型的基础上研究了两机系统下励磁系统调差系数对系统阻尼特性的影响。通过对系统进行特征值分析,提出调差灵敏度的概念来表征阻尼与调差系数的相关关系,寻找影响阻尼与调差相关性的关键系统参数,对多机系统励磁系统调差系数的整定配置有一定指导意义。Excitation system adjustment coefficient is an important parameter of excitation system control. Reasonable parameter setting is conducive to safe and stable system operation. In this paper, firstly, extended two-machine Heffron-Phillips model was derived. Based on this model, influence of excitation system adjustment coefficient of the two-machine system on system damping characteristics was studied. Through system eigenvalue analysis, concept of adjustment coefficient sensitivity was proposed to characterize damping and differential coefficient correlation adjustment, looking for damping and difference between key system parameters. For multi-machine excitation system adjusting aberration coefficient setting, this model has certain guiding significance.

关 键 词：励磁系统 调差系数 两机扩展Heffron-Phillips模型 阻尼特性 特征值分析 

分 类 号：TM721[电气工程—电力系统及自动化]