多机电力系统的强迫功率振荡特性研究  

Research on characteristics of forced power oscillation in multi-machine power system

作　　者：马燕峰[1] 赵培龙[1] 赵书强[1] 

机构地区：[1]华北电力大学电力工程系,河北保定071003

出　　处：《电力系统保护与控制》2013年第24期23-29,共7页Power System Protection and Control

基　　金：国家电网公司大电网重大专项资助项目课题(SGCC-MPLG019-2012);中央高校基本科研业务费专项资金资助(09MG07);河北省自然科学基金资助项目(E2010001693;E2011502014)

摘　　要：推导了多机电力系统强迫功率振荡近似稳态响应的表达式,在此基础上应用左右特征向量和参与因子等参数对多机系统发生强迫功率振荡时的振荡分布特性、扰动源位置对系统响应的影响等问题进行了分析。介绍了应用电力系统仿真软件DIgSILENT进行电力系统小干扰稳定性分析的一般方法。通过对4机2区系统的仿真分析对多机系统强迫功率振荡特性进行验证并与负阻尼和弱阻尼振荡进行比较,有助于更加深入地认识电力系统强迫功率振荡。The approximate expression of the steady-state response of forced power oscillation in multi-machine power system is obtained. The left and right eigenvectors and participation factors and other parameters are used to analyze the oscillation distribution characteristics of forced power oscillation in multi-machine system and the impact of the disturbance source location on the system response. The general method of power system small signal analysis is introduced based on the power system simulation software DIgSILENT. The characteristics of forced power oscillation is simulated on 4-machine 2-area power system. Then the forced power oscillation is compared with negative damping and weakly damped oscillation. It contributes to deep understanding of forced power oscillation of multi-machine power system.

关 键 词：低频振荡 强迫功率振荡 振荡特性 共振机理 DIGSILENT 

分 类 号：TM712[电气工程—电力系统及自动化]