Excitation Control Based Energy-Shaping with Direct Mechanical Damping Injection for Transient Stability Improvement of Power Systems

作     者：Jiao Xiaohong,Sun Yuanzhang,Shen Tielong Institute of Electrical Engineering, Yanshan University,Qinhuangdao,066004 ,China Department of Electrical Engineering,Tsinghua University,Beijing, 100084,China Department of Mechanical Engineering,Sophia University,Tokyo, 102-8554,Japan 

会议名称：《第25届中国控制会议》

会议日期：2006年

学科分类：08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：This work was supported by China Postdoctoral Science Foundation 2004036064 

关 键 词：Direct mechanical damping injection energy-shaping excitation control transient stability power systems 

摘      要：正In this paper, a novel energy-shaping design method is provided for excitation controller of power systems, which is carried out by directly injecting the compensation damping into the mechanical damping. This design method utilizes the transient energy function with the physical properties of power system,and the adjusted parameters of the designed controller have directly corresponding relation to the physical meaning of the mechanical damping and electrical damping of power system. In addition,to further enhance the transient stability,considering the possible variation in the transmission line and uncertainties in physical parameters, an adaptive excitation controller is also designed by employing the direct mechanical damping injection. It is shown that the proposed excitation controller can make the system have better dynamic properties and large stability margin even in the case with the permanent fault on transmission line and the turbine failure. And,for illustrating the effectiveness of the proposed controller, the simulation comparison results with the traditional energy-shaping approach are presented.