Study And Application Of Transformer Station Digital Physical Hybrid Simulation Training Dystem

With the extension of the power grid,it became more complicate.So the simulation system needs to be improved to satisfy the demands of grid planning,employee training and equipments testing.This article studied and developed a 220 kV substation’s hybrid simulation system that mixed with computer software simulation system and real physical equipments,basic on the research of 220 kV substation.The hardware of this system is built with cluster system including computer,communication module,input/output interface and power amplifier.Its software is made up of electromagnetic-electromechanical simulation system,graphical modeling system.By elaborating in detail the dynamic characteristics of primary apparatus,the paper gets their mathematical models and Differential-Algebraic Equations,represents the specific ways of digital computation for electromagnetic transient simulation and electromechanical transient simulation.The interface method for hybrid simulation of electromagneticelectromechanical contains the design of equivalent circuit,the interchange time sequence of the interface and the data conversion between the two kinds of circuits.The 220 kV digital physical hybrid simulation system is more accurate,flexible and inexpensive,which is applied in the 220 kV substation simulation system,and its advantage has been verified by many experiments.