电力系统数字物理综合仿真接口方法-电力系统及其自动化专业论文.docxVIP

华中 科技 大学 华 中 科 技 大 学 硕 士 学 位 论 文 II II ABSTRACT Simulation technology has been extensively used as a research tool in eletrical power system.It can be classified into two categories based on their different implementations:analog simulation and physical simulation,both of which have their own advantages and disadvantages.With the rapid development of power system,the traditional pure digital simulation or pure physical simulation has failed to meet the requirements of power system studies.Therefore,the digital-physical hybrid simulation technology has been presented,which can combine digital and physical simulation method and bring both functions into full plays.Currently the mature applicable standard of hybrid simulation has not been set up,and the research relating to this has still been in the simulation research or specific experiments on particular case. The deeper thoretical analysis is lacked. This thesis first establish the overall structure of the digital-physical hybrid simulation system,and the frame of the interface connecting digital and physical subsystem based on the Substitution Principle.Besides,the principles and characteristics of five popular interface algorithms are introduced.Second,this thesis focuses on the Ideal Transformer Model(ITM) interface algorithm.The principles and the stable conditions are discussed,and the methods of improving system stability are raised.Third,a new interface algorithm based on impedance compensation is proposed,the positive and negative equivalent impedance are used to ensure the system’s stability.The two interface algorithm theory above are verified by MATLAB and Real-time Digital Simulator(RTDS).Finally,since the long-distance transmission of eletricity signals is a problem in hybrid simulation system in practice,the long-distance eletricity signal transmission scheme is designed based on the hybrid simulation system in Guangdong Electric Power Research Institute,and the chassis which can achieve the function